Specifications:Features: - It is made of stone and steel, durable and lightweight.- Ceramic grinding head nail bits set for electric nail file.- Set of 12 ceramic drill bits(include a mandrel bit) that fits most standard professional electric nail files.- For filing, shaping, thinning, cleaning and polishing enhancements.- Ideal for nail art and the removal of dead cuticle.Model: Electric Manicure HeadMaterial: Stainless SteelColor: See PictureQuantity: 12pcsOutside Diameter: 6mmHandle Diameter: 2.35mmLength: 15mmPackage Weight : 80 G / 2.82 OuncesPackage Dimensions (L*W*H) : 145*60*20 MM / 5.71*2.36*0.79 InchesRetail Packaging: No, No PackingPackage Include:12 x Electric Manicure Head1 x Plastic Box