Description ER11 collet to clamp cutting bits in the spindle of a CNC machine. Various sizes are available depending on the shaft size of the cutting bit. Specifications: Collet size: ER11 Material: Spring steel 65Mn (HRC:44-48) Bore Size: 3.175mm Packing List: 1 x ER 11 Collet – 3.175mm Bore


