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. 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) 1 x Grinder Backing Pad