Porter Cable Sand Paper 726000425 Porter Cable 6" PSA 40 Grit No Holes (25 Pack) Features: Resin coated to resist heat and humidity for longer life Made with aluminum oxide grain Anti-clog coating resists loading Pressure sensitive adhesive holds securely without slipping Application: Wood, metal, fiberglass, plastic and painted surfaces Fits: DA, random orbit and other back-up pads Size: 6" Holes: 0 Backing: Adhesive Grit: 40 Quantity: 25