- Made of corundum which is wear resistance, have good polishing effect. - It is an efficient polishing tool of deburring and polishing. - High hardness and durable, good abrasion resistance & grinding performance. - Can be used for stone / wood preliminary polishing and polishing. - Suitable for pneumatic, electric grinding machine. - Material: Corundum - Weight: Approx. 225g/7.9oz - Size: as pictures shown - Color & Grit: White, 46#; White, 120#; Red, 46#; Red 120# (Optional) - Package List: 1 x Corundum Grinding Wheel