³⁄₃₂" dia. shanks are the jeweler's preferred standard for burs and small rotary tools. They fit the adjustable chucks found on most flexshaft handpieces as well as ³⁄₃₂" handpiece collets.

Bud/Flame Burs have a gently curved taper that comes to a point. Similar to a cone bur, they are useful for tapering, enlarging holes, or repositioning holes, and for a variety of stone setting tasks.

Vanadium Steel burs are economically priced. They cut precisely when new, but don't retain their sharpness as long as other steel alloys.