Mad Rock took over two years to design and finally produce the Ultra-Tech HMS Screwgate Locking Carabiner. The company’s goal was to build a lightweight and compact yet strong carabiner that would complement any belay device.
The Ultra-Tech’s cold forged I-beam construction made this possible. It is a low bulk biner that features a non-snagging Madlok gate. It has a smooth locking action that allows quick and secure fastening of the carabiner. The screwgate locking mechanism is manually operated eliminating any risk of worn out or broken springs often used for auto-locking biners.
The pear shape of the Ultra-Tech makes it a true HMS (Halbmastwurfsicherung) carabiner. Its oversized enclosure makes it possible to accommodate more attachments as well as Munter hitch belays.
The major axis can support a force of 25 kN, while the minor axis, 9 kN. With an open gate, the figure is also 9 kN. Dimensions of the Ultra-Tech HMS Screwgate are: height, 96 mm; width, 65 mm; and gate opening, 23 mm. Weight is at 67 g.