This Silverline impact driver features fully reversible action (clockwise/anti-clockwise) and a 1/2" square drive attachment for use with standard 1/2" sockets. It includes a removable 8mm bit holder and 4 bits: 1 x 6mm slotted, 1 x 8mm slotted, 1 x PH2 Phillips, and 1 x PH4 Phillips. The set comes in a handy metal storage case. This automotive tool is 170mm in length.