The Klein 70571 Grip-It hex-key set has blades that rotate independently up to 270 deg. It fits perfectly so that the hex tool end reduces stripping problems. The keys are industrial strength, impact-resistant and tested for performance to below freezing temperatures. Handy sets fit your pocket or tool box easily and help eliminate the lost-key problem Tough, heat-treated alloy steel Hex key ends are square-cut for a secure full-depth fit and maximum contact with the hex socket to prevent slippage and stripping of the socket Holder serves as a handle Two key positions (straight-out or right angle) for extra leverage