Firepower 10 Pack Bonded Abrasive 3 in 80 Grit Flap Disc Flashings Roofing Blade pitch optimized to ensure Blade pitch optimized to ensure ideal air movement and peak performance DAMP RATED: this fan is rated for indoor or outdoor use in spaces exposed to moisture and humidity such as porches ) 6 Manufacturer Warranty Lifetime Warranty Certifications and Listings ANSI Compliant Constructed of hundreds of resin bonded cloth abrasive sheets firmly attached to a balanced core During use 25 Arbor Diameter N A Threads Per Inch 1 For Use with Concrete & Masonry No For Use with Aluminum No For Use with Tile No For Use with Stainless Steel Yes For Use with Ductile Pipe No For Use with Asphalt No For Use with Ferrous Metal Yes Package Quantity 10 Warranty 90 day CA Residents: Prop 65 Warning(s) No For Use with Chop Saws Yes For Use with Cut Off Saws No For Use with Angle Grinders No For Use with Circular Saws Yes