Elite Endurance Engineered To Cut Material With Extremely Abrasive Properties Resulting In Exceptional Blade Life. Breakthrough Double Laser Welding Technology Reducing The Risk Of Damaged Segments. Osa Certified To The Highest Level Of Quality And Tested Safety. State-Of-The-Art Metallurgically Engineered High-Performance Long-Life Bond Formulation. Maximum Concentration Of Ultra Grade Diamond Meshed Within The Bond. Precision Engineered Hardened High Grade 65Mn Manganese Steel Tensioned Core. Manufactured To En 13236 Quality Standards.to Cut These Materials:asphalt Asphalt Over Concrete Blocks - Breeze Blocks - Toplite Concrete - Pipes Concrete - Kerbs Concrete - Green Gritstone Sandstone - Medium Mortar.PTDFORDIRCORDBAB300E