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 PadMaterial: ABS + RubberChassis Diameter: Approx. 125mm/4.9inColor: Red and BlackPurpose: Used for Polishing Disc of Angle Grinder Sanding MachineChassis Thread Specification: 2 x M14Maximum Speed: 12500RPMInterface: Hook and Loop Fastener (Hook and Loop Type).Package List:1 x Grinder Backing PadNote:Manual measurement, please allow 0.040.12in 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.