grinding stones:

Introduction: The abrasive block is flexbile, it's used for polishing the surface, and not to hurt the hand. It is also can be used in water. The sanding block can be maked as customer's requirement.

material: alumina oxide or black silicon carbide brasive, closed coated. Depending on different sponges, four types: soft sponge, medium sponge, hard sponge, EVA.

Application: For sanding curved, contoured or flat surfaces of wood, metal, paint, plastic, ceramics and drywall.

Features: Flexbile, durable, can sand into areas unreachable by sand paper sheets. Washable, various sizes and grit combinations.