Gator Reptilion Sanding Sheets Are Designed To Meet The Demands Of Professionals With Active Matrix Technology That Channels Away Dust And Debris From The Sanding Surface Resulting In 4X Longer Lasting Performance. These Next-Generation Abrasive Sheets Feature Ceramax Ceramic Grain, Engineered To Cut Faster, And Last Longer For A High-Quality, Professional Finish. Designed To Be Used By Hand Or Cut-To-Fit A Rubber Sanding Block, 1/3 Sheet Power Sander Or 1/4 Sheet Power Palm Sander. 4X Longer Lasting With Active Matrix Technology Ceramax Premium Ceramic Grain Blend Cuts Faster, Lasts Longer Prospec Performance Professional Quality and Premium Finish Consistency Clog-Resist Fights Build-Up and Loading On Paper During Use Extreme-Sand Unyielding Multi-Surface Sanding Performance Sand-Dry Durable Construction Is Ideal For Dry Sanding Applications For Use By Hand Or Cut-To-Fit A Rubber Sanding Block, 1/3 Sheet Sander Or 1/4 Sheet Palm Sander 40 Grit – Coarse – Best For Badly Rusted Metal, Rough Sawn Lumber And Thick Layers Of Old Paint Series Name: Reptilion Type: Sheet Durability: Premium For Use on Fiberglass: No For Use on Metal: Yes For Use on Plaster: No For Use on Wood: Yes Mineral: Ceramic alumina Number of Holes: 0 Sanding Grade: Medium Sanding Grit: 60 Total Number of Pieces: 5 Warranty: None Compatible Tool: Sander CA Residents: Prop 65 Warning(s): No UNSPSC: 27112700