Busch Fig 411C Fast Cut Concave Cone Cup Bur Kit of 16 Burs 1.00mm - 2.30mm Resale The Fretz E-101 Extender works

The Fretz E-101 Extender works with either the H-101 bench-mounted stake holder (112

allowing you to get back to precision work quickly

or simply worn through regular use

10mm Fox Tungsten Vanadium Inverted Cone Bur

The result is a high-quality loupe that combines ergonomic wearability with the optical performance demanded by professional watchmakers and jewelers

Busch Fig 411C Fast Cut Concave Cone Cup Bur Kit of 16 Burs 1.00mm - 2.30mm Resale The Fretz E-101 Extender worksCup burs are primarily used by jewelers for finishing and rounding the top of prongs during stone setting. The Busch Fig. 411C Fast Cut Concave Cone Cup Bur offers a distinct geometry compared to the standard Busch 77B concave cup bur its concave cone shape produces a more sharply sloped, rounded profile when finishing prong tips. This 16 piece kit is composed of Busch 411C Fast Cut Concave Cone Cup Burs in eight sizes ranging from 1. 00mm to 2. 30mm,