Dia. 3-50mm Diamond Bead Grinding Head Jade Amber Ball-shaped Polishing Wheel Outer Diameter::15mm x 10 pcs Oilstone Whetstone Grindstone

Oilstone Whetstone Grindstone

Hard 90A ( Hardness 35A-95A can be customized )

Ideal for cutting and grinding granite and ceramic

Silicon Carbide abrasive

Dia. 3-50mm Diamond Bead Grinding Head Jade Amber Ball-shaped Polishing Wheel Outer Diameter::15mm x 10 pcs Oilstone Whetstone GrindstoneOuter Diameter: 3mm 50mm ( Note: For P150 coarse, choose 1mm bigger than the bead, but choose the same size as bead for P400 fine ! ) Grit: P150 Coarse P400 Fine Shank Diameter: 6mm, 1 4" Application: It is mainly used for bead grinding and polishing. P150 coarse for bead round forming; P400 fine for scratches removal. Apply to amber, beeswax, turquoise, nephrite with Mohs hardness below 6. 5 etc.