CIRCULAR SAW BLADES 5/8 ARBOR/DIAMOND KNOCKOUT FIBER CEMENT CUT Dia In=7-1/4 Teeth=4 Thin kerf, .071", design gives fast and precise cuts with less dust and waste. Generate up to 50 percent less respirable dust. The PCD triple chip design offers up to 60-times longer cutting life than standard carbide blades. Perfect for full time use inheavy duty applications like cutting multiple pieces of fiber cement board, 10 degree hook, Polycrystalline Diamond Tipped teeth.