This precision made Bergeon tool is designed for working on watch balances. Has a variety of notches for tightening all sizes of hairspring collets and for reaming. Superb quality steel construction. Swiss made.
Perfect for tightening hairspring collets and reaming
Designed to use on watch balances
High quality steel construction
Measures 1-1/16" x 11/16" x 11/16" inches (27 x 18 x18mm)
