Introducing the 3” x 21” Aluminum Oxide Sanding Belt Set in 6 Popularly Used Grits by POWERTECThis premium assortment pack of 18 was designed to provide you with a cost effective set of long lasting and high performance sanding belts in a range of grits. From 60 grit to 400 grits, this comprehensive selection of popular grit sizes allows you to sand through all the stages of your project, from coarse to fine polishing. Made with open coat Aluminum Oxide (A/O) grain, they act as a multi-purpose tool best used for wood sanding, shaping, stripping and giving a smooth finish to many of your woodworking applications. Additionally, these belts work exceptionally well with lite and non-ferrous metals, blending welds, fiberglass, plastic, and rubber. Each belt flaunts an X-weight clothed backing, and possesses a strong resin on resin bond with well crafted seams for long lasting results.Whether you're a professional or DIY kind of guy, these heavy duty sanding belts are compatible with many of your go-to sanders, including: Craftsman, Makita, Skil, Wen, Ridgid, Porter-Cable, Black+Decker, Bosch, Triton, Hitachi, Metabo, and more! Specifications:Abrasive Belt Size: 3-Inch x 21-InchGrit Size: 3 Each of 60 80 120 180 240 400 GritsMaterial: Premium Open Coat Aluminum Oxide (A/O) GrainBacking: Strong “X” Weight Cloth BackingJoint: Strong Butt Joint ConstructionPackage: 18 pieces Grit Selection Guide: 40 – 60 Grit: Heavy Sanding and Stripping 80 – 180 Grit: Removing Tiny Imperfections 240 – 400 Grit: Delivering a Super Fine Smooth Finish