Bosch premium grade abrasives are constructed of high quality abrasive grains, bonding coats and backings for metal, concrete, masonry, pipeline, asphalt and stainless steel cutting and grinding. Easy-to-read labels are incorporated into the manufacturing process and therefore remain intact throughout the life of the wheel

* While some manufacturers use recycled grains, Bosch uses only superior virgin grains made to exact specifications * Carefully formulated resinoid bonds are applied to meet the unique specifications of each wheel * Multiple layers of long, stranded fiberglass are woven to form an exceptionally strong reinforcement layer specific to the application * A30T-BF - Aluminum oxide grain, 30 grit grain size, toward the hard range on the bond hardness scale. Resin bond and fiberglass reinforcing * AZ30S-BF - Aluminum zirconium grain, 30 grit grain size, in the medium to hard range on the bond hardness scale. Resin bond and fiberglass reinforcing * AS30INOX-BF - Aluminum oxide grain specially formulated for use with stainless steel, 30 grit grain size. Resin bond and fiberglass reinforcing * AS46ALU-BF - Aluminum oxide grain specially formulated for use with aluminum, 46 grit grain size. Resin bond and fiberglass reinforcing * CS30S-BF - Silicon carbide special grain, 30 grit grain size, in the medium to hard range on the bond hardness scale. Resin bond and fiberglass reinforcing