Kutzall 3/4 x 1-1/8 in. Ball-Nose 1/4-in. Shaft Burr, Coarse is designed for use with flex shaft tools, hand grinders, or any tool that accommodates 1/4-inch collets or adjustable chucks. This versatile burr can be easily cleaned with solvent or by burning clean with a gas torch without damaging the teeth. Its coarse texture allows it to create flat surfaces, round-over edges, concave shapes with the rounded top, and radius-bottom grooves, making it i for a variety of shaping and finishing tasks. Model Number: BN-34