Named after a lizard that adheres to virtually any surface, the ISC KH452 Gecko Supersafe Carabiner keeps your ropes and other climbing gear close to where you want them at all times.

Made by International Safety Components, Inc, the Gecko Supersafe features a unique configuration designed to force the connection point to the ‘biner’s small end, and the attachment point to its larger end. To attain this, the upper end of the spine is angled away from the gate, thus also keeping the rope at a safe distance away from it. The spine tapers on its way to the bottom then straightens just before reaching it. The bottom section rises in a curved slant towards the hinge of the gate. With this overall shape, the carabiner fits comfortably in your palms making it easy to open, close, and manipulate.

The gate is equipped with a patented triple-lock mechanism requiring a three-way action to open. While it may take a little time getting used to such an opening, this guarantees that unintentional unlocking is practically eliminated, keeping you and your stuff away from accidents.

Crafted from forged 7075 aluminum, the ISC KH452 Gecko Supersafe Carabiner is lightweight but strong. It weighs only 84 grams. Alloyed with zinc, this type of aluminum is strong enough for use in the construction of aircraft wings and fuselage. Indeed, it is also called aerospace aluminum.

To protect the carabiner from scratches and nicks, its main body is anodized in black, while the gate in colored red. This black and red combination actually makes the ‘biner look rather attractive.

The Gecko Supersafe measures approximately 4.5 inches high and 3.0 inches wide. Gate opening is a shade less than an inch. Minimum breaking load is at 6,600 pounds, or the equivalent of 30kN. Work load limit, on the other hand, computed at a 10:1 ratio, is 660 pounds or 3 kN.

DMM first introduced the revolutionary concept of incorporating a pulley to a carabiner with its DMM Revolver. This, however, is a non-locking carabiner that is closed with a wire gate. With the DMM Revolver Locksafe Carabiner, a locking version is now available.

The pulley is embedded into the biner’s basket. It rotates on a high-tensile stainless steel spindle that is encased in a green sleeve, which is also made of stainless steel. It can take loads of up to 11kN, or about 2,470 pounds force, without any deformation. An IGUS dry-lube bearing allows the pulley to rotate smoothly.

When a loaded rope slides against a carabiner, friction is inevitably generated. This slowly yet surely degrades the rope over time. With the DMM Revolver’s pulley, however, the sliding friction of standard carabiners is transformed into a rolling friction. While friction is not eliminated, it is minimized thus prolonging the service life of your ropes.

In addition to the benefits to your rope, the pulley also facilitates climbing or branch walking as the resistance of the biner to a sliding rope is reduced. It is also excellent for top roping for a climber’s safety and for emergency rescue work. Apart from these, it can also be used to rig hauling systems.

Opening the gate of the DMM Revolver Locksafe Carabiner requires you to lift the barrel before rotating it through 90° before you can push it open, thus complying with ANSI standards. When the gate is released, it automatically reverts to its closed position with the help of springs inside the barrel. Matching the sleeve of the pulley, the barrel is also colored green.

The Revolver Locksafe has a closed strength of 24kN, so that in the unlikely event that the pulley fails, you still have a fully functioning standard screwgate carabiner. Open and cross-loaded strength are at 8kN.

External dimensions are 10.75 cm x 5.75 cm with a gate opening of 1.5 cm. Weight is 70 g.

Crafted out of a type of certified aluminum alloy used for aircrafts, the Omega Pacific Modified D Screw-Lok Carabiner is deemed one of the strongest carabiners available in the market today. With its modified D shape, it is suited for all around use including rescue work, school and rope courses, and even in industrial settings, offering great handling characteristics.

The alloy is tempered with the application of heat, which greatly enhances the Modified D’s strength and durability. Omega Pacific says it can carry a load of up to 7,000 pounds. Its aluminum construction helps bring its weight to 269 grams, which results in an excellent weight to strength ratio.

Plated with zinc chromate, the carabiner is provided with superior protection from rust or corrosion. In fact, it can even be used in wet or muddy conditions.

Featuring a screw lock gate, which is preferred for rescue operations, accidental opening is eliminated assuring the safety of both the rescuer and the rescued. The lock has internal locking threads that prevent wearing down your ropes. Utilizing a gate lock design, it prevents excessive tightening of the locking mechanism. This, in turn, eliminates binding.

The gate opening of the Omega Pacific Modified D Screw-Lok Carabiner is a large 24 millimeters. This greatly facilitates its attachment to your ropes or harnesses, a feature very much appreciated when trying to bring down an injured climber from tall trees in a hurry.

Owing to its design and the materials used, the Modified D has a major axis strength of 65 kN (kiloNewtons) when the gate is closed. When opened, this goes down to 24 kN. Minor axis strength is 12 kN. It measures 4.46 inches long and 2.70 inches wide.

Designed for rescue work and other difficult conditions, the Petzl M73 SL Vulcan Screw Lock Carabiner is made of high quality steel that can support heavy loads. Its wide gate and superior strength allows its use as a multiple anchor.

The SL Vulcan sports a screw lock gate that is intended for use when you do not need to periodically open and close the gate. As the lock is manually operated, it is not prone to jamming the system if foreign objects find their way into it, unlike automatic locks.

It uses Petzl’s Keylock system that does away with hooks at the interface of the gate and body. This totally eliminates the possibility of ropes, harnesses, anchors, and other gear from getting snagged on the ‘biner.

The gate opening measures 32 mm. With the gate of the carabiner closed, it has a major axis strength of 40 kiloNewtons. This is substantially higher when compared to most other carabiners. With the gate opened, this is reduced to 11 kiloNewtons. This rating, however, is still comparable to that of its competitors. The minor axis, on the other hand, has a strength of 11 kiloNewtons. Its weight of 290 g is far heavier than other ‘biners but this is the price it has to pay for its superior strength.

It is available in either gold or black.

The eye on the DMM Captive Eye Locksafe Carabiner assures that ropes will not cross-load over each other and that an inserted rope has no way of sliding out of the carabiner. If you need to be able to predict the direction of a load, such as when using a lanyard to secure your equipment, then you can use this type of carabiner.

Made of hot forged and fully heat-treated aluminum, the carabiner is tough but lightweight. It registers a breaking strength of 25kN and a weight of 104 g. Its safe working load is approximately 250 kgs. It is fully anodized and sealed with a protective coating to resist corrosion as well as to give it an attractive finish.

The carabiner measures 135 mm in length and 81 mm in width. Its eye is about 22 mm in diameter which can accommodate virtually all ropes used in tree climbing. Rope insertion into the main body is facilitated with the 20 mm opening of the gate. Its Taperlock clean nose increases gate push-in as well as side resistance.

The locking mechanism of the DMM Captive Eye Locksafe Carabiner assures a secure attachment with practically zero probability of accidental opening. You need to perform two steps to open the gate. First, you have to lift the barrel. Next, you need to twist it up to 90°. Only then will the gate open to allow the placement of ropes or other attachments. When closing, all you have to do is let go of the barrel. It will automatically revert to its closed position.

Individually marked, the carabiners are easily traceable in case you accidentally drop and lose them during your climbs.

With a keylock locking mechanism that does away with the hook on the carabiner’s nose, the Black Diamond Rocklock Screwgate Carabiner effectively eliminates rope snags and catches.

The oversized Rocklock is the biggest belay locking carabiner from Black Diamond. For this reason, it can be easily used with various belaying and rappelling techniques, even when wearing gloves. You can also use a Munter hitch or even two ropes with it.

The spine of the Black Diamond Rocklock is slightly curved which results in a wider gate opening. This, in turn, leads to quicker clipping of ropes or other gear. The square hinge end secures the belay keeping it in place. The size of the ‘biner helps in enabling users to operate the screwgate with one hand.

Given its size, the Rocklock has a weight of 85 grams. With its gate closed, it has a strength of 24 kiloNewtons. When opened, this is reduced to 8 kiloNewtons. The minor axis, on the other hand, registers 7 kiloNewtons. Gate clearance is 21 mm.

The carabiner’s body is colored mocha but the sleeve is available in an assortment of colors.

Featuring an offset D design, the DMM Eclipse Screwgate Carabiner maximizes strength by forcing its load towards its strongest part, the spine, and sets them parallel to each other.

With a gate that is quick to open and a large opening that measures 22 mm, clipping unloaded and loaded ropes as well as with other climbing gear is quick and easy. The profile of the locking mechanism is low which makes it resistant to snags and hitches. It has a large enough capacity to accommodate several ropes should you opt to use it for rigging. Although large, it remains light with a weight of only 58 grams. This makes them convenient to carry even when climbing exceptionally tall trees.

The DMM Eclipse is made entirely of hot forged series 7075 aluminum, including the barrel. With its zinc alloy, the device is provided with extra strength and good resistance to fatigue. This results in a carabiner that is extra strong not only on its spine but also on its gate and barrel. The aluminum is protected from the elements through the process of anodizing, that is, the natural oxide layer on its surface is thickened. This results in an increased resistance to corrosion, rust, as well as wear and tear.

Strength of the major axis when closed is 28 kilonewtons. This is reduced to 10 when opened. The minor axis, on the other hand, has a strength of 8 kilonewtons.

Sporting the company’s signature feature called the True Radius, the Omega Pacific Five-O Locking Gate Carabiner is a rope-friendly ‘biner that does not cut or abrade your ropes. There are zero flat areas anywhere a load-bearing rope passes. Also like the other carabiners from Omega Pacific, the Five-O is constructed through the company’s proprietary ISO Cold Forging process. This process strengthens the Aircraft 7000 Series aluminum out of which it is made.

The Five-O is designed in a way that it feels comfortable in your hands. It is also easy to manipulate even with gloved hands. It has a gate with a 21 mm opening which makes clipping with rings or other carabiners, and attaching ropes virtually effortless. Its deep basket forces loaded ropes to move towards the spine where it is strongest rather than the gate.

The major axis has a strength of 25 kiloNewtons with the gate closed. However, when it is opened this is reduced to 7 kiloNewtons. The minor axis, on the other hand, is rated at 8 kiloNewtons. At its widest point, the Omega Pacific Five-O Locking Gate Carabiner measures 68.3 mm, with a length of 108.5 mm. It weighs approximately 63 grams.

With an I-beam design that has been hot forged, the Wild Country Helium Clean Wire is probably the lightest full-size carabiner yet it manages to remain strong and durable resulting in an excellent strength to weight ratio. It weighs only 33 grams but it registers a strength of 24 kilonewtons with the major axis closed, and 10 kilonewtons if opened.

The nose profile of this lightweight carabiner is hooded while the gate is of a flat-wire design. These features assure the prevention of snagging while clipping bolts and slings. Even small cords and webbing can easily slide in or out without getting snagged. The open gate clearance of 27 mm also contributes to a quick and easy attachment. In addition, the nose design also protects the gate from accidental openings. This is because the flat-wire gate is sunk and hidden within a hollow beneath the nose.

This full-size carabiner is comfortable to the hand and is easy to manipulate even when wearing gloves. With slight indentations at both ends, ropes are easily and exactly positioned in their proper places.

With its integrated spur and a wire gate closure along its spine, the Petzl Freino Autolocking Carabiner stands out among other carabiners. The spur is designed to serve as a supplementary braking mechanism when descending on a single rope.

It can work with most belay devices but it is particularly suited to work with Petzl Stop, Simple, Grigri, I’D, or Huit descenders. By running your rope through the spur, friction is increased and thus you gain additional braking power to slow your descent. This is useful during rescue operations when you have to lower an injured climber. Your combined weight may greatly increase the speed of descent.

The Petzl Freino is an autolocking carabiner that has a key lock nose and a gate. The nose is notchless and the gate is slotted assuring a snag-free closure. Unlocking is accomplished by simply rotating the Twist Lock sleeve. This sleeve has a low profile and quickly shuts itself when released. It is thus easy to manipulate it even when wearing gloves.

The carabiner is constructed out of hot-forged aluminum 7000 which makes it less likely to break and fracture. It is also because of this that it weighs only 85 grams. For its breaking strength, the major axis has a rating of 25 kN while the minor axis has 10 kN. With the gate open, the strength is 9 kN. The gate has an opening of 15 mm.

The Petzl Freino Autolocking Carabiner’s frame and gate are colored olive while the sleeve is red.