This blade produces quality cuts when sizing plywood & other sheet goods with a portable Circular saw. The blade can also be used for cutting plastics. Blade has a Universal bore with 5/8" Diameter Arbor hole and diamond knock-out.#Pc-620, (D) diameter: 7-1/4 (184mm), teeth: 40, (D) bore: 5/8 w/DIAMOND knockout, kerf (B): .120 (3.1mm), Plate (C): .078 (2.0mm), PC-620 carbide Tipped plywood & plastic 7-1/4 inch dia X 40T TCG, 5/8 - Universal bore