![Half Round Sapphire Burnishers (10444209871)](http://perrinwatchparts.com/cdn/shop/products/64-30401-4-300_300x300.jpg?v=1595350499)
Half Round Sapphire Burnishers Half Round Sapphire Burnisher is ideally suited for polishing balance staff pivots, wheel pivots, and pinions. The sapphire burnisher is mounted in a hardwood handle and is supplied with a protective cap. The length of the usable stone is 40 mm. This is a Bergeon Swiss quality product.