Add the Elora 67385 2.9/16\", 1\" Sq. Dr. Bi-Hexagon Socket to your kit With Professional Quality, The Elora 67385 is manufactured from chrome vanadium steel hardened, tempered and chrome plated for corrosion protection. The Chamfered end allows positive nut location and entry. This Elora 67385 features a hole for driving accessory with a locking pin.  Features: Hole for driving accessory with locking pin Chamfered end allows positive nut location and entry Chrome vanadium steel hardened, tempered and chrome plated for corrosion protection Specification: Size: 2.9/16\"