Black Diamond's Lockdown Leash is similar in function to DMM's Chokehold Leash. It has an ingenious loop which can be threaded around the shaft so that as you lift your hand up the leash opens allowing you to take your hand out. Alternatively the loop can be hitched over adze or hammer, either of which methods, in theory, enables you to remove your hand from the wristloop without having to use the other hand - please note the word "theory"!
Suitable only for climbing and alpine axes that are 70cm or less.
44g (not 58g as on BD's website).