6mm-7mm 15/64"-9/32" Clamping Range CNC Spring Collet Chuck ER25-7 Product Name : Spring Collet;Model No. : ER25 Clamping Range : 6mm-7mm/ 15/64"-9/32";Clamping Diameter : 7mm/ 9/32" Overall Size : 25 x 35mm/ 1" x 1.4"(Max.Dia*H);Material : Stainless Steel Color : Silver Tone;Net Weight : 66g Package Content : 1 x Spring Collet