Kutzall 1/4 x 1/2 in. Ball-Nose 1/8-in. Shaft Burr, Fine is designed for use with flex shaft tools, hand grinders, or any tools equipped with 1/8-inch collets or adjustable chucks. These fine ball nose burrs are versatile, capable of producing flat surfaces, rounded edges, concave shapes with the rounded top, and radius-bottom grooves. They can be easily cleaned with solvent or even burned clean using a gas torch without damaging the teeth, ensuring long-lasting performance and reliability for your detailed grinding and shaping tasks. Model Number: BN-14-EG