The L1670N Lindemann Serrated Side Cutting Bur has a tapered head diameter size of 1.2mm to 2.2mm and cutting surface length of 22.0mm. The overall length is 70mm long with a Stryker style J-Notch. 4 flutes on the Lindemann side cutting burs help remove excess material quickly. Surgical side cutting burs can be used in a variety of surgeries where lateral cutting is required. Omega?s Lindemann Side burs are made from medical grade stainless steel. All our surgical side cutting burs are manufactured right here in the United States.