DESIGNED FOR SHARP & CLEAN CUTTING ON - Exclusive top-grade raw materials and 0.04in ultra-thin thickness. The resulting fast cutting times keep at a minimum both burr formation and the thermal load both on the workpiece and on the cutting-off wheel. Which means less rework and higher efficiency. SUPER LONG SERVICE LIFE - The cut off wheels 4 1/2 inch are suitable for professional scenes demanding high aggressiveness and long service life. Due to the perfect ratio of BASF resin and high-quality alumina, silicon carbide, theyâ??re extremely durable with 2.5 times of service life than the conventional brands. For a good craftsman, this means that the time to replace the cutting disks is greatly saved. MULTIFUNCTION AND SELF-SHARPENING - Our cutting wheel is a special performance grade for performing demanding tasks. It had strong aggressiveness for metallic material such as iron, angle steel, stainless steel and ferrous metals. Its self-sharpening, provides balanced cutting performance throughout the cutting process. AUTHENTICATE SECURITY AND STABILITY - The 4.5" cut off wheels is reinforced with double-layer glass fiber mesh. The excellent stability can be ensured by precise measurement, risk of breakage can be avoided even when subjected to lateral forces. Comply with EU EN12413, MPA and TUV standards. HIGHLY COMPATIBLE & DURABLE AND STABLE PERFORMANCE - The angle grinder cut wheel is fully compatible with all angle grinders with 7/8-inch shank and speeds up to 13,300 RPM and 80M/S, enabling the cutting disks to achieve optimal performance in DeWalt, Makita, Bosch, Black & Decker and Milwaukee angle grinders. Each cutting piece is supplemented with moisture-proof fiber cloth to ensure that its performance is not affected by moisture and corrosion.