Bud burs are useful for enlarging holes and for a variety of shaping tasks. Made of the finest Swiss-milled Vanadium steel for long life and accuracy. Our burs are the finest in quality at very reasonable prices and your satisfaction is guaranteed. Style: Bud. Head Size: 3.30mm. Total length: 44.5mm. Shank size: 3/32" (2.35mm). 6 Burs per package