BENDER collet nut for cello and double bass button
Original collet nut for the Bender button. For cello and double bass buttons for 10 mm endpins.
Includes the plastic clamping insert for secure clamping.
Note: Replacing the collet nut alone will not improve clamping, if the clamping thread is already worn out. In such a case, the entire button has to be replaced.