PLEASE NOTE – ER11-A collets and accessories are NOT compatible with the DeWalt, Makita or X-Carve Pro. They do not fit commercial routers or rotary tools, like DeWalt, Bosch, Dremel, Porter Cable, etc.
These are precision collets for use in ER11-A collets and shanks. They have very low runout and hold the bits firmly in place.
The nut is interchangeable with any collet, so you don’t need one with every collet size.