For circular saws and other portable electric saws; use for cutting all types of masonry, concrete, concrete block, brick, limestone, sandstone, tile, cast iron and nonferrous metals. For contractors, carpenters, repairmen, mechanics, farmers and home craftsmen. Resinoid bonded and doubly reinforced fiberglass for durability and performance. Metal reinforced arbors for strength. 1/8" thick. This Masonry Abrasive Blade is one of many top quality items in our Circular Saw Blade - Masonry department.