0.8-10mm Capacity Keyless 3/8-24UNF Mount Spanner Drill Chuck Product Name : Keyless Drill Chuck;Capacity : 0.8-10mm / 0.032" - 0.39" Mount : 3/8-24UNF;Thread Hole Diameter : 10mm/ 3/8" Drill Chuck Outer Diameter : 41mm/ 1 5/8";Drill Chuck Total Length : 51mm/ 2" Color : Black & Silver Tone;Material : Metal, Plastic Net Weight : 166g;Package Content : 1 x Keyless Drill Chuck