Collection: ER Collets

Tool (End Mill) holding systems for CNC routers and mills, available in various sizes for different tool shanks. A collet is a component that is inserted into the shaft of a spindle that holds the cutting tool (end mill). The collet has a taper that when tightened into the shaft of the spindle will tighten around the shank of the end mill.The shank of the end mill is the smoother part of the end mill.