This replacement backing pad is designed with 4 screw eyes design, making it easy to install firmly and improving your work efficiency. Suitable for various materials in both woodworking and metalworking, including wood, aluminium alloy, rubber, , plastic, glass and other materials. Features -Color: Black -Material: PU foaming material -Size: 12.30X1.20X1.10cm/4.83X0.47X0.43 in. - It is designed for polishing and sanding hook and loop fastener's surface, giving you a smooth finish. - This hook and loop sander pad has good compatibility, which can work with most sanding machines. - The sanding pad is designed with 4 mounting screw holes for quick and easy installation, and for increased abrasive sanding paper grip. - 8-hole design. the hook and loop sander replacement backing pad features convenient dust collection. - Effectively vacuum up the dust and debris, providing a removal effect while saving your energy and time. Package list: 1 x Sanding Pad