This 5-piece rotary burr set from Amtech is designed for grinding, polishing, shaping, and burnishing wood surfaces. Ideal for use with most electric and cordless drills, the set features a 6mm (1/4") shank and includes five popular shapes: ball, oval, cylinder, large cone, and small cone. Manufactured from hardened carbon steel for durability, these burrs vary in length between 40mm - 55mm. Delivery is available to the UK and select international locations, with specific terms for certain areas.