uxcell 3/8"-24UNF Mount Hand Tightening Keyless Drill Chuck 0.8-10mm Capacity Product Name : Keyless Drill Chuck w Adapter;Capacity : 0.8-10mm Thread Mount : 3/8"-24UNF;Shank Thread Dia : 9.5mm/ 3/8" Overall Size : 4 x 5.6cm / 1.6" x 2.2"(Max D*H);Color : Black & Silver Tone Material : Metal, Plastic;Net Weight : 180g Package Content : 1 x Keyless Drill Chuck,1 x Adapter