3M 4 Inch Diameter Cut Disc - 21555 Part #: 21555 Line: MMM 3M 4 Inch Diameter Cut Disc Manufacturer's Defect Warranty Color: Green Diameter (in): 4 Inch Material: Nylon Quantity: 1 Type: Quick Change Disc Rating: Multiple Attachment Method: Screw-On Mineral Type: Aluminum Oxide Sanding Surface: Carbon Steel, Paint, Stainless Steel Sanding Method: Machine Wet Or Dry: Dry Show More Show Less