The black and decker mtim3 multievo multi tool impact driver attachment prevents stripping of screw heads easily drives bolts and removes rusty screws it is perfect for high speed drilling into wood and metal it is fitted with a quick connect feature for easy bit change and it is able to drive the largest screws and tough fastenings with minimum effort it comes with 3 x 50mm screwdriver bits sl7 pz2 hex 4 2 x pilot drill bits 2 and 3mm and 3 x socket drivers 8 10 and 13mm specifications chuck