To refine and polish the surface of your product. Sharp, long life, no peel off in using. Competitive price with better price. Jiu Feng Diamond Tools Quality First, Honesty, Seeking for Perfection, Reliability1. Specifications Grit80# /270#Blade materialcorundum & MnHandle material plasticLength180mm / 200mm etc.2. ApplicationsTo fine and polish hard brittle fragile things like granite, marble, ...