-Features & Benefits: Standard 3/8 inch square with four Philips Drill Bit Set includes: # 2 Phillips, No. 3, 5/16 "Slotted and 9/32" Slot A compact, 3/8 "Drive To 5/16 hex adaptor bits separately Size for spare bits erh ltlich set durable product KDT1140 SAE impact wrench set taut rusted bolts and screws. Twist tool in direction of rotation and hold, while Beat with hammer to loosen screws and bolts. Reverse action screws of use.