3pcs ER11 CNC Collet Milling Lathe Holder Tool 1/8 Inch (3.175mm) 4mm 6mm UK
Model: ER11. These spring collets are made of high quality 65Mn spring steel for CNC milling lathe tool and work-holding engraving machine. There are 3 collets of various sizes in4mm, 1/8" and 6mm.