SIZE SPECIFICATION: Box + Set/9 Pcs - 36mmx5/16" Phillip Power Bits (PH2 / PH3), 36mmx5/16" Slotted Power Bits (SL8 / SL10), 75mmx5/16" Phillip Power Bits (PH2 / PH3), 1/2" Impact Driver with grip, 1/2" Drive 5/16" Bit Holder. TECHNICAL SPECIFICATION: S2 Material, Higher Torque, Hardened & Tempered, Comfortable Grip, Heavy Duty, Blow Moulded Case packing. HSN CODE: 82054000. PRODUCT CODE: GY10705.