Klein Tools 70571 Grip-It Ball End Hex Key Set, 5 Key, Inch Sizes 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