Klein Tools Impact Socket Set 66010 6 Piece 2 in 1 12 Point SAE (1 2 Square Drive 4140 Steel Coaxial Spring Pole Hardware Kit) Annular Cutters Tri Metal Shock Resistant Brazing: Multi layer silver copper silver Tri Metal Shock Resistant Brazing: Multi layer silver copper silver brazing allows carbide teeth to absorb severe impacts without tip detachment Brand Manufacturer DeWalt Model Part Number DWAFV37243 Blade Diameter 7 High Torque 12 Point Geometry: Universal 12 point profile provides multi angle alignment over both standard hex heads and square utility nuts position the head over the nut and push forward firmly so the internal coaxial spring compresses completely