The Petzl William Screw Lock is a large, pear-shaped locking carabiner for belay stations and belaying with a Munter hitch.
Features
Great capacity thanks to its large dimensions; carabiner can hold a very large quantity of equipment and it's the optimal shape for belaying with a Munter hitch
Ergonomic shape is designed for gripping with gloves on
Asymmetric pear shape facilitates opening and the manipulation of the locking system
Keylock system avoids any involuntary snagging of the carabiner
Manual screwgate system features red band indicator to show carabiner is unlocked, providing a quick visual safety check
Large gate opening eases clip-in
Recommended for dirty and dusty environments that can cause autolocking carabiner mechanisms to malfunction