Feature: 1. Multi Purpose: The backing pad of grinder is suitable for the polishing disc of angle grinder and sander, and can be used for high speed grinding and flat surface polishing. 2. Good Adhesion: This grinder chassis adopts a hook and loop design, which can reduce dust accumulation and make the sandpaper highly adhere to the polishing disc. 3. Stable Performance: The screw has high hardness, and the hook and loop backing pad rotates smoothly without shaking when in use, ensuring the safe operation of your machine. 4. High Quality Material: Sander hook and loop is made of high quality ABS and rubber material, which is not easy to break and can be used for many times and long term. 5. Professional: 125mm/4.9in chassis diameter, professional grinding machine rubber chassis, built in installation thread, easy and fast installation, saving time. Specification: Item Type: Grinder Backing Pad Material: ABS + Rubber Chassis Diameter: Approx. 125mm/4.9in Color: Red and Black Purpose: Used for Polishing Disc of Angle Grinder Sanding Machine Chassis Thread Specification: 2 x M14 Maximum Speed: 12500RPM Interface: Hook and Loop Fastener (Hook and Loop Type) Package List: 1 x Grinder Backing Pad Note: Manual measurement, please allow 0.04‑0.12in error. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.