PFERD Duo disc combination cutting and light deburring wheel conform to all North American and international safety standards. Duo disc is ideal for dual-purpose cutting and deburring, on steel and stainless steel. Heavily reinforced for maximum safety, Duo disc also offers market-leading performance compared to competitive brands. Applications: Cut-off work, light deburring, light surface grinding. Recommendations for use: 1/8" thickness for maximum service life and high lateral stability. .065" thickness for faster cutting with less material waste. Use on thinner work pieces such as sheet metal, sections and tube stock. Specification: 4-1/2" Diameter x 1/8" Thickness; 2.8 mm Thickness; Bore Size 7/8"; 13300 Max. RPM.