This is a set of 66 pieces drum sanding kit. This kit includes drum sanding bit and band mandrel 6.35mm, 9.5mm and 12.7mm , it will make your diy work smooth. Widely used in all kinds of mold, electronics, glass, equipment, jewelry, metals, non-metallic surface, high-grade furniture, appliance housings, automotive surface, motorcycles surface, etc. Features - ColorAssorted Color - Size: Diameter of shank: 6.35/9.5/12.7mm; Length of shank: 38mm. - Material: Silicon carbide abrasive+Gauze base. - A set of 66 pcs, including 2 pcs 6.35mm, 2 pcs 9.5mm and 2 pcs 12.7mm shank; and 20 pcs 6.35mm, 20 pcs 9.5mm and 20 pcs 12.7mm . - The quality is reliable, adaptable work environment. - , increase the grinding machine bit life. - Turn your or other rotary tool into versatile high-speed sander. - Perfect accessory to sand, shape, groove & finish & , fiberglass & more. - Commonly used in grinding Bodhi peeled, wood , grinding and plastic polish, metal polish rust, jade, DIY circuit board production. Package list: 66 x electric accessories