90° Bearing High Speed Spearhead Bur Sets
Spearhead burs are made from M2 Steel - The superoir High Speed Steel - Rockwell 63 -65 hardness. Spiral Cut - Increase performance, retains sharpness and reduces loading. All high speed burs are standard with 3/32" shanks. 14 bur set includes the even numbers between 2-28. 25 bur set includes numbers 1-26 excluding #21. 33 bur set includes #'s 1-34 excluding #21.