Cypher Iris HMS Screwgate Carabiner

HMS stands for 'Halbmastwurfsicherung,' which translates to 'half-clove hitch belay.' This pear-shaped design is specifically engineered to accommodate a Munter hitch knot, making it an ideal choice for belaying and rappelling.

The screwgate on the Iris is engineered to resist clogging, which helps maintain smooth operation even in dusty or gritty environments. While no mechanical gate is entirely immune to debris, this design is more reliable than standard threaded gates in challenging conditions.

No, the keylock nose is designed specifically to eliminate the hook-and-notch snagging common with traditional carabiners. This ensures a smooth, clean clipping experience when you are managing ropes or attaching gear.

At 76 grams, the Iris is a standard weight for a full-sized HMS carabiner. While it is not an ultralight option, its size and versatility make it a great workhorse for belaying, anchor building, or managing multiple attachments where security and ease of use are more important than shaving every gram.

Yes, the large HMS shape is perfectly suited for use with most belay devices. Its spacious basket allows the device to sit comfortably and rotate freely, ensuring the rope feeds smoothly without binding.