Made of tungsten vanadium steel for strength and durability. Teeth are precision machined and uniformly spaced so cutting is accurate and smooth. 

Maximum safe speed varies with bur size and is indicated on the box. Use a good lubricant, such as Gesswein Lube-Stik, to facilitate cutting and prolong tool life. Burs measure approximately 1-3/4″ long with 3/32″ shank. Made in Germany.


Size 023 023 040 050 100
Diameter 2.30mm 2.30mm 4.00mm 5.00mm 10.00mm
Length 0.15mm 0.40mm 0.40mm 0.50mm 0.60mm
Figure 45 231S 231S 231S 231S
Item # 121-7200 121-8025 121-8040 121-8050 121-8100
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