Features EFFECTIVE SANDING:These disc sander pads are made of rubber, have a smooth surface and not easy to break, can be used for many times for a long time, effective when sanding flat surfaces. EASY AND QUICK TO INSTALL: The built in installation thread can easily and quickly install the replacement pad of the sanding machine, which saves replacement time and effort. 8 HOLE DESIGN: The 5in hook and loop replacement pad is characterized by 4 screw holes and 8 dust proof holes, working with sander that have dust collection system to vacuum up the dust and debris efficiently,providing you a quick dust removal effect, at the same time, save your much energy, suitable for most sander back pads. COMPACT LAYOUT: The distance from the center to the center of the cushion screw hole is about 1 to 1/4 inch, which is suitable for most sanders with 4 screws, please confirm the size before purchase. SCRATCH RESISTANCE: The sander backing pad is made of high quality reliable material, ABS material possess impact resistance, scratch resistance, and environmentally friendly, durable and practical,this grinding wheel has a longer working times. Specification: Item Type: Sander Backing Pad Material: ABS + rubber Purpose: Sandpaper polishing disc Color: Dark blue + black Grinding Disc Diameter: 5in Applicable Models: For Most grinders with 4 screws Package List:2 x Sander Backing Pad Note:Please use with a suitable grinder. Please confirm the size before purchasing. Package List 2 x Sander Backing Pad