Auniwaig Sanding Polishing Backer Plate with Drill Adapter Package Content: 1pcs x Sanding Polishing Backer Plate with Drill Adapter Description: 1.Widely used for large area polishing of furniture, floors, cars, etc., to polish irregular surfaces, etc., safe and good polishing effect, making your work more efficient 2.The backing pad is used with sanding papers or polishing pads, for use on angle grinders, bench grinders, electric drills and other pneumatic and electric tools 3.The PP material is durable and not easy to crack,the high toughness cushion and the special-shaped processing surface fit more comprehensivelyachieve consistent and smooth finish work Specification: Abrasive material: Sponge Drill bit:7 inch(180mm) Thread: 14mm/0.55 inch Bar diameter:8mm/0.31 inch Note: 1.The adapter rod is a left-handed thread, and the direction of rotation should be clockwise. If you rotate it counterclockwise, the backing pad may loosen. It is recommended to idling for more than one minute before use, and observe whether the machine is operating normally 2.Safety concerned, it's necessary to wear goggles or eyes protection tools in case the cleaning agents fly out while turning