Busch® 156C Hart shaped burs are the go to bur for setting. The shape is perfect for cutting seats into prongs and for both channel and flush setting. Also used for designs and diamond or bright cutting in metal. Made of tungsten vanadium steel for strength and durability. Features precision machined, uniformly spaced teeth for accurate and smooth cutting. Use with a lubricant such as Gesswein Lube-Stik to facilitate cutting and prolong tool life. Cutting angle of the bur is 90°. The 3/32" shanks measure approximately 1.75" long. Maximum operating speed varies with bur size. Please consult with ANSI (American National Standards Institute) for speed recommendations. Made in Germany.

See the chart below to see which burs are available in this set.