uxcell 0.8-10mm Keyless Drill Chuck for Hand Electric Driller Capacity: 0.8-10mm / 0.031"-0.393"; Mount: 3/8-24UNF Drill Chuck Outer Diameter : 40mm/1.6" Drill Chuck Total Length: 60mm/2.4" Color: Black Material; Metal, Plastic Package Content: 1 x Keyless Drill Chuck