3M HOOKIT backing pad 50392 15 holes for 150 mm hook and loop discs

3m backing pad for 150 mm 7-hole hook and loop discs with 5/16" thread pitch - specifically designed for use with hookit hook and loop discs, these backing pads hold the discs securely in place while allowing for easy removal and attachment - all backing pads are lightweight and durable - maximum operating speed in safe conditions is up to 7000 rpm