uxcell Clamping Range 10-9mm ER25 Precision Spring Collet Reaming Part Product Name : Spring Collet;Model No. : ER25 Clamping Range : 10-9mm/ 0.39"-0.35";Clamping Diameter : 10mm/ 0.39" Overall Size : 26 x 34mm/1" x 1.3"(Dia*Length);Material : Stainless Steel Color : Silver Tone;Net Weight : 67g Package Content : 1 x Spring Collet