Busch® Tungsten Vanadium Stone-Setting Bur Set, 3.5 Rolling Mills & Pattern Plates each measuring 1-1/2" diameter x

each measuring 1-1/2" diameter x 3/4"H

20-gauge (633066) —Round 4mm ID

Quickly and accurately test all colors of gold (from 6–24-karat) and platinum with the AuRACLE™ PRO gold/platinum tester from GemOro®

It is fully loaded with features including a large cutout

STV and KH

Busch® Tungsten Vanadium Stone-Setting Bur Set, 3.5 Rolling Mills & Pattern Plates each measuring 1-1/2" diameter xThese Busch stone setting burs are used to cut level seats in prongs for setting gemstones. Sizes are calibrated to fit standard brilliant cut round gemstones. This set includes 11 burs, sizes 3. 5mm through 8mm. Made from cost effective tungsten vanadium, these burs cut precisely and can be used at low speeds.