BENDER brass collet nut
With its higher mass compared to the regular aluminium clamping nut, the Bender brass nut can improve the sound of the cello. The added mass interacts with the vibration of the strings, which are connected to the end button via the tailpiece and the tail gut.
When the endpin can be removed from the cello, the Bender aluminium nut can be easily unscrewed and replaced by the brass nut. If the endpin is blocked at the rear end, please refer to your violin maker.