Features:_x005F_x000D__x005F_x000D_Magic adhesive patch bottom, available pasted flocking sandpaper sheet, wool ball. _x005F_x000D_100mm and 125mm two backing pad for your choice, meet your different needs. _x005F_x000D_Adopting universal M8 fastening thread, easy to install. _x005F_x000D_Can be used in pneumatic or electric polishing machine, suitable for all kinds of adhesive type sandpaper. _x005F_x000D_Widely used for artificial stone, furniture, wood products, metals, automobiles grinding and polishing, etc. _x005F_x000D__x005F_x000D_Specification:_x005F_x000D_Material: PU Foam & Hard Plastic_x005F_x000D_Weight: Approx. 100g/3.5oz_x005F_x000D_Thread: M8_x005F_x000D_Diameter: 100mm/4inch; 125mm/5inch (Optional)_x005F_x000D_Operating method: _x005F_x000D_1. Remove the black rubber thread protective cover. _x005F_x000D_2. Fixed grinding machine chassis _x005F_x000D_3. Tighten the grinding pad tightly. _x005F_x000D_4. Use suede sandpaper to stick to the magic paste. _x005F_x000D__x005F_x000D_Package List:_x005F_x000D_1 x Polishing Backing Pad