The Mercer 614300 is a 4” x 3/32” x 5/8”C Small Diameter Masonry Cut-Off Wheel. The Mercer 614300 is a small diameter, high speed and fully reinforced Cut-Off wheel. The masonry cut-off wheel is used for cutting masonry products, concrete, reinforced concrete, brick, block, roof tile, stone & artificial stone. The blade has an aluminum oxide grain and is made up of high strength phenolic resin bond. The cut-off wheel also has double external reinforcing with metal centers on 1/16” & 1/8”.