![Bergeon Reamer Fit KWM 8.64mm (10444274959)](http://perrinwatchparts.com/cdn/shop/products/64.6200-55-600_600x600.jpg?v=1595350564)
Reamer 8.64 mm Bergeon to use KWM bushings is a Bergeon made, Swiss quality replacement reamer which is inserted into the center shaft of the Bergeon bushing tool. Reamers cut into the plates of clocks, creating a hole to accept the appropriate sized KWM bushing. To be used for bushings with an outside diameter of 8.70 mm.