49-66-6165 This Deep Impact Socket is the perfect tool for loosening or tightening stubborn bolts. The impact socket has a black phosphate finish and is made of steel. It has a 3/8 in. drive size, 6 point metric measurement type, impact drive type, 1 3/16 in bolt clearance and 2 9/16 in socket length. This 6 point deep impact socket can be used with adapters, drivers, ratchets and wrenches. The Deep Impact Socket will meet all your demands on the job site.