Electric Power Tool Component Key Type Drill Chuck 0.3-4mm 1/64"-5/32" Product Name : Key Type Drill Chuck;Fit For : Carpentry;Drill Range : 0.3-4mm/1/64"-5/32" Interior Hole Diameter : 3mm/ 0.12", 6mm/0.24";Outside Diameter : 21.5mm/0.85" Total Height : 29mm/ 1.1";Chuck Key : 45 x 35mm/ 1.8" x 1.4" (L*W) Main Material : Metal;Color : Black, Silver Tone Weight : 96g;Package Content : 1 x Drill Chuck