Blaze Plastic Flap Disc T27-Flat or T29-Conical, 4-1/2" x 7/8", 36 Grit, (10-Pack)Get a cool and fast cut rate on your blending, deburring and stock removal projects with the Blaze R980P coarse grit center mount plastic flat flap disc. The type 27 flat or type 29 conical flap disc has a ceramic alumina abrasive grain that gives you up to a 200 percent longer life on hard to grind materials, making it a cost efficient choice. The Y weight polyester flaps resist fraying and retain grains, while the flexible plastic backing plate