uxcell C10-ER11A-100L Straight Collet Chuck Milling Lathe Extension Rod Product Name : Straight Collet Chuck;Model : C10-ER11A-100L Shank Diameter : 10 mm / 0.4";Clamping Diameter : 9 mm / 0.35" Overall Size : 123 x 20 mm / 4.8" x 0.8" (L*Max.D);Material : Carbon Steel Color : Silver Tone, Black;Net Weight : 89g Package Content : 1 x Straight Collet Chuck