| Image | Summary | ||||
|---|---|---|---|---|---|
 | Petzl William Ball Lock (metal sleeve b) | HMS | full-auto | press-and-twist | excellent large HMS auto-locker in gold |
 | Petzl William Ball Lock (metal sleeve) | HMS | full-auto | press-and-twist | excellent large HMS auto-locker |
 | Petzl William Screw Lock | HMS | manual | gate stopped - unknown | screwlock version of iconic HMS carabiner |