Fein 3-1/8 in. Backing Pad, 2-Pk is for sanding with dust extraction, designed to protect your work piece from damage and marks thanks to its durable plastic carrier plate. The perforated pad design helps you sand efficiently in corners and along edges, making it i for detailed work. Featuring the innovative Starlock mounting system, these backing pads are compatible with nearly every popular multifunction tool, ensuring versatility and convenience for your sanding needs. Model Number: