Porter Cable 40 Grit 5" No-Hole, PSA Sanding Discs (12 Pack) 725000412 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: 5" Holes: 0 Backing: Adhesive Grit: 40 Quantity: 12 Made in USA