This precision-made Bergeon tool is designed for working on watch balances. It features a variety of notches for tightening all sizes of hairspring collets and for reaming. Made from superb quality steel, it is Swiss-made. Perfect for tightening hairspring collets and reaming, this tool is specifically designed for use on watch balances. It measures 1-1/16" x 11/16" x 11/16" (27 x 18 x 18 mm). Bergeon / Swiss made. We only sell brand new products. 100% made by Bergeon, Swiss, and brand new.
