Feature: 1. WIDE RANGE OF USES: The hook and loop backing plates with hook and loop function can easily close and remove the disc without wearing the overall strength. Has a wide range of uses and can be used for most pad materials with hook and loop backing systems like foam, wool, paper, microfiber, etc. 2. FAST AND DURABLE OSCILLATION SPEED: Fast and durable oscillation speed can withstand high frequencies to achieve a consistent and smooth surface 3. 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 4. WITHSTAND HIGH FREQUENCIES: Utilize steel struts molded in the center hub can withstand high frequencies while achieving a perfect surface finish 5. FOR MOST AIR SANDERS: Universal standard back cushion size is durable and suitable for most air sanders in woodworking, garages or industrial environments Specification: Item Type: Hook And Loop Backing Plates Material: PU Purpose: Used for grinding, finishing and polishing Color: Yellow. Package List: 1 x Hook And Loop Backing Plates Note: Due to manual measurement, there is an error of 1‑3mm.