ITEM NAME:Electric Nail Clipper Accessories Pet Nail Polishing Tool Spare Grinding Wh H4R1 Electric Nail Clipper Accessories Pet Nail Polishing Tool Spare Grinding Wh H4R1 Replacement grinding wheel for emitter pet nail grinder. Material: The grinding wheel is made of alloy sand. Usually one grinding wheel could last extremely long time use for several years. How to Clean: You could use an eraser to clean the grinding wheel after grinding pet nail. How to Replace: Just take out old grinding wheel from the slot and replace the new wheel again. Color: silver + gold Size: 13 x 13 x 8 cm. Material: Alloy sand. Package Including 2 x pet grinding head