OPTIMIZED SIZE and SHAPE: Basket can hold a large quantity of equipment. Optimal shape for belaying with a Munter hitch. Keylock system to avoid any involuntary snagging of the carabiner. ERGONOMIC: Designed for better grip when handling with gloves. Asymetrical pear shape facilitates opening and the manipulation of the locking system. SCREW-LOCK: Easy-to-open system. Suitable for harsh environments where dirt, mud, or ice could cause an automatic locking system to jam. Red band provides a visual warning when the screwgate carabiner is unlocked. KEYLOCK SYSTEM: Avoids any involuntary snagging of the carabiner. ASYMMETRICAL PEAR SHAPE: Facilitates opening and the manipulation of the locking system. The WILLIAM asymmetrical large capacity aluminum carabiner has a pear shape that is practical for easily connecting multiple items while rock or ice climbing. Its ergonomics and Keylock system facilitate manipulations, even when wearing gloves. The WILLIAM carabiner is available in two locking systems: manual SCREW-LOCK or automatic BALL-LOCK.