Features: - 3MM of the sandwich grinding machine dedicated.- Using a high-strength synthetic metal material, hard and firm.- Small size, easy to carry.- For marble, glass, handicrafts, metal and special metal grinding effect is very good.- Applicable to abrasive surface adjustment grinding, precision parts of the brightness of light, remove the fine flash and so on.Model: Grinding Head SetsMateria: EmeryColor: SilverQuantity: 20pcsSize: 3mmPackage Weight : 107 G / 3.77 OuncesPackage Dimensions (L*W*H) : 97*58*15 MM / 3.82*2.28*0.59 InchesRetail Packaging: No, No PackingPackage Include:20 x Emery Grinding Head1 x Plastic Box