This premium assortment pack 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 to 400 grits, this comprehensive collection of popular grit sizes allows you to sand through all the stages of your project, from coarse to fine polishing - a knife maker's essential. 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. COMPATIBILITY: POWERTEC / Craftsman / Rockwell / Jet / Rikon / Wen / Ryobi, Grizzly / Shop Fox / Delta / Skil / Porter Cable / Harbor Freight and more. Specifications Abrasive Belt Size: 1 in. x 30 in. Grit Size: 4 Each of 60/ 80/ 120/ 180/ 240/ 400,. Material: Premium Open Coat Aluminum Oxide (A/O) GrainBacking: Strong "X" Weight Cloth Backing. Joint: Strong Butt Joint Construction. Grit Selection Guide: 40 - 60 Grit: Heavy Sanding and Stripping. 80 - 180 Grit: Removing Tiny Imperfections. 240 - 400 Grit: Delivering a Super Fine Smooth Finishns, technologies, and product development to the industry.