Spearhead High Speed Steel 45 Degree Bearing Bur Kit of 14 Pieces Ear Post & Backs Two different size steel collets

Two different size steel collets are mounted in opposite ends of the hollow handle

TM5 right-hand tapered spindle

Electronic rotary tumblers rotate faster than standard rotary tumblers

Images of antique tools used during setting repairs are interspersed throughout

non-adjustable installation

Spearhead High Speed Steel 45 Degree Bearing Bur Kit of 14 Pieces Ear Post & Backs Two different size steel colletsSpearhead High Speed Steel (HSS) 45 degree bearing burs are hand cut by expert craftsmen in the USA, delivering superior sharpness and longer service life compared to machine cut Tungsten Vanadium Carbon Steel burs. Each bur in the Spearhead line is easily identified by the size stamped directly on the 3 32" shank a hallmark of quality that professional jewelers rely on. These 45 degree setting burs are the preferred choice of quality jewelers