DEWALT® designed the series 20 7-1/4 In. 18T nail cutting circular saw blade to provide top quality performance throughout its long life. Rock carbide teeth maximize resistance and extend the lifespan of this blade. This blade brings maximum durability because its flush ground teeth and reinforced shoulder have been tested to ensure they meet the highest standards. DEWALT® blades feature a 5/8 In. arbor with diamond knock-out for compatibility and accuracy. With an anti-stick rim, time-consuming problems caused by friction and gum-up are minimized so you can maximize productivity.