Diablo, 12" x 1/8" x 20 mm, Premium High Speed Masonry Cut-Off Discs, Provides Superior Performance & Increased Productivity, Aluminum Oxide Blend, Discs Cut Through Material Faster Than Other Cut-Off Discs & Offer Extra Long Cutting Life, Fully Reinforced For Use In Hand Held Cut-Off Work, Ideal For Use When Working In Hard To Reach Areas.