uxcell B16 Mount 1mm-13mm Capacity Spanner Drill Chuck Drilling w Key Tool Product Name : Spanner Drill Chuck;Main Material : Metal;Color : Black, Silver Tone Capacity : 1mm-13mm;Mount : B16 Hole Diameter : 8mm/ 0.3";Total Size : 51 x 86mm/ 2" x 3.3"(D*H) Key Size : 85 x 46mm/ 3.3" x 1.8" (L*W);Fit For : Carpentry Weight : 589g;Package Content : 1 x Spanner Drill Chuck,1 x Key Tool