Impact Driver Set Socket Adapter Power Bits Heat Treated Carbon Steel Chrome Plated Specification Contents 4 - 36mm x 5/16" Power Bit" Philip NO. 2 & 3 Slotted : 8mm & 10mm 2 - 80mm* 5/16" Hex Bit Philip NO. 2 & 3 1 - 1/2" drive impact driver 1 - 1/2" drive 5/16" Bit Holder 1 - Blow case