These diamond blades are specifically designed to enhance the cutting speed and performance against abrasive materials such as asphalt. They are engineered to fit the different power levels of equipment used by paving companies, parking lot repair, demolition contractors, commercial contractors, concrete contractors, and general contractors. These blades utilize undercut protection for extended cutting life. Use wet or dry. The Paragon Diamond Tools HHPA-30-160 30” x.160 x 1”DP High-HP Blade is the blade you can count on when working with tough surfaces like asphalt.