Assorted 20 pieces of diamond coated grinder heads / burrs. There are many shape likes sphere, cylinder, bullet or needle, etc....... 1/4" (6mm) shank, 2-3/8" (60mm) total length (some sizes shown as below). In great quality material. Suitable for use in grind the edge of glass, marble or rock. Come with plastic sleeve.
Sphere (largest) - 10mm (3/8 inch) diameter
Cylinder (largest) - 10mm (3/8") diameter
Bullet (largest) - 10mm (3/8") diameter
Needle - 25mm (1") long diamond coated