Features GOOD QUALITY PU MATERIAL: Good quality PU material structure is suitable for various applications, can be customized to be rigid or flexible, but never rigid. FOR MOST AIR SANDERS: The universal standard back cushion size is durable and suitable for most air sanders in woodworking, garages or industrial environments. WIDE RANGE OF USES: The hook and loop backing plates with hook and loop function can easily close and remove the disc without carrying the overall force. Has a wide range of uses and can be used for most cushion materials with hook and loop support systems. High frequency resistance: uses steel spacers molded into the center hub to withstand high frequencies while achieving a perfect surface finish. FAST AND DURABLE OSCILLATION SPEED: The fast and durable oscillation speed can withstand high frequencies to achieve a uniform and smooth surface. Specification: Item Type: Hook and Loop Backing Plates Material: PU Purpose: used for grinding, finishing and polishing Colour: yellow Package list: 1 x Hook and Loop Support Plate Small note: Due to manual measurement, there may be an error of 1-3 mm. Package List 1 x Hook And Loop Backing Plates