Spearhead High Speed Steel 90 Degree Bearing Bur Kit of 14 Pieces

Otto Frei carries the Spearhead brand of High Speed Steel (HSS) 90 degree setting burs which are hand cut by expert craftsmen in the USA. You can always recognize the Spearhead brand of HSS 90 degree bearing 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 heart burs (or hart burs) are preferred by quality jewelers everywhere.

This is a 14 piece set of HSS 90 degree setting burs that starts with size No. 1 (0.90mm) and ends with size No. 28 (7.2mm). This set contains one each of the following burs:

119.421 0.9 mm
119.423 1.3 mm
119.425 1.7 mm
119.427 2.1 mm
119.429 2.5 mm
119.431 2.9 mm
119.433 3.3 mm
119.435 3.8 mm
119.437 4.3 mm
119.439 4.7 mm
119.442 5.2 mm
119.444 5.6 mm
119.446 6.3 mm
119.448 7.2 mm