Spearhead High Speed Steel 90 Degree Bearing Bur Kit of 14 Pieces Ring Sizers & Stretchers Delivers superior cutting performance on

Delivers superior cutting performance on all metals

Air-powered rotary handpiece operating at up to 320

Do not use on ferrous metals

Set of 9 color-coded screwdrivers for fast size identification

Spearhead High Speed Steel 90 Degree Bearing Bur Kit of 14 Pieces Ring Sizers & Stretchers Delivers superior cutting performance onSpearhead High Speed Steel (HSS) 90 degree bearing burs are hand cut by expert craftsmen in the USA and are a preferred choice of quality jewelers everywhere. Each bur in the Spearhead line features the size stamped directly on the 3 32" shank, making identification fast and reliable at the bench. Compared to imported Tungsten Vanadium Carbon Steel burs, these HSS burs are harder, stay sharper longer, and deliver extended service lifemaking them a