Kutzall 1/8 x 3/4 in. Ball-Nose 1/8-in. Shaft Burr, Coarse is designed for use with flex shaft tools, hand grinders, or any other tools that accept 1/8-inch collets or adjustable chucks. These durable burrs feature a coarse texture that allows you to create flat surfaces, round-over edges, concave shapes with the rounded top, and radius-bottom grooves with ease. They can be cleaned effectively using solvent or by burning clean with a gas torch without damaging the teeth, ensuring long-lasting performance and reliability in your projects. Model Number: BN-18-E