300 Grit Diamond Burr - 50 Pc Set Grit:300g the organic material is replaced

the organic material is replaced by minerals

is buried under sediment and then subjected to heat and pressure over millions of years

Approximate Size of 1 pair: 9cm x 7

5cm Approximate Weight for 1 piece: 690g

300 Grit Diamond Burr - 50 Pc Set Grit:300g the organic material is replacedDescription: These Diamond plated rotary burrs with finer 300 grit points are excellent for sanding stage and removing the coarse grinding scratches and chips. They prepare the workpiece well for pre polish stage. For use with motor tools, drills, and flex shafts. Made In: China Head Size: Assorted Head Shapes Include Sphere, Cylinder, Flame, wheel, inverted cone, etc. Shaft Diameter: 1 8" (3mm) shank Overall Length: 45mm Case Size: 11cm x 10cm x 5.