Rock Lock Twistlock
As Black Diamond’s largest belay and rappel locking carabiner, the RockLock features a twistlock gate that can be operated with one hand. Simply rotate the gate sleeve clockwise, then pull it back to open. To lock it, simply let go and it returns to the closed position automatically. Since it’s made of aluminum, it’s tremendously strong — the RockLock has a closed-gate strength rating of 24 KILONEWTONS (or 5,395 pounds), yet is quite lightweight. Plus, it feels great in hand in our mediumsized hands. Made in the USA.
Automatic twistlock ensures solid lockup One-handed operation
Awesome strengthto-weight ratio Slightly curved spine allows for easy gate opening
Cons? Um … let us think about this one.