Spearhead High Speed Steel Ball Bur Master Kit of 33 Pieces

Otto Frei carries the Spearhead brand of High Speed Steel (HSS) ball burs which are hand cut by expert craftsmen in the USA. You can always recognize the Spearhead brand of HSS round burs by the size stamped on the 3/32" shanks. While more expensive than imported Tungsten Vanadium Carbon Steel Burs, these HSS burs will stay sharp and give a longer service life than the not as hard machine cut Tungsten Vanadium burs. HSS burs are preferred by quality jewelers everywhere. Set Contains 1 each of the following HSS Ball Burs: Part No. Metric Size Bur No. 119.341 .90 mm 1 119.342 1.10 mm 2 119.343 1.30 mm 3 119.344 1.50 mm 4 119.345 1.70 mm 5 119.346 1.90 mm 6 119.347 2.10 mm 7 119.348 2.30 mm 8 119.349 2.50 mm 9 119.350 2.70 mm 10 119.351 2.90 mm 11 119.352 3.10 mm 12 119.353 3.30 mm 13 119.354 3.50 mm 14 119.355 3.80 mm 15 119.356 4.00 mm 16 119.357 4.30 mm 1