Feature: Both side of core coated with abrasive grains, which provide smooth cutting, and reduce heat generating, it is guaranteed to deliver a better combination of cutting speed and tool life suitable for most of hand-held grinder or trim saw with 7/8" arbor The core is made with heat-treated hi-speed steel which are guaranteed to withstand the demands of dry and fast cutting, the maximum safe operating speed is 13,300 RPM Designed to cut through the tough materials, including granite, marble, Aluminum, Auto Body Panels, Cast Iron, Copper Pipe, Corrugated Roofing, Drywall, Ductile Iron Pipe, Fire Door, Masonry, Plastic, PVC, Rebar, Reinforced Concrete, Steel Metal, Stucco, Wood |