Busch Hart Bur 90 degree angle for Stone Setting. Made of tungsten vanadium steel for strength and durability. Teeth are precision machined and uniformly spaced so cutting is accurate and smooth. The Jewelers' bur, standard of the trade. Use with ProCut bur lubricant # 19928 to extend bur life and cutting. Shank measures 3/32", approximately 1-3/4" long. Priced per piece, 10% discount for 6 or more burs.
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