Lackmond® Diamond Demolition Blade, Carbide Segmented, series: 911, 4 in Blade dia, 1/4 in, 7/8 to 5/8 in, Wet/Dry, 7 mm Segment Height, Applicable Materials: Tar, Fiberglass, Metal Sheeting, Resin Fiber, Stone, Concrete and Gravel. The 911 Series Demolition Blade is Designed to Be Used on a Variety of Applications Including Tar, Fiberglass, Metal Sheeting, Resin Fiber, Stone, Concrete, Gravel, and Much More. It is Equipped with Tall Tungsten Carbide Segments and is Ideal in Emergency Fire and Rescue Operations, as Well as Demolition Projects. The 911 Series Demo Blade is Engineered with Jagged Carbide Segments That Chop and Rip Through Materials Quickly and Efficiently Making it Ideal For Rescue Units, Roofers, Renovators, Landscapers, Demolition Crews, Wreckers, Recyclers and General Contractors. Lackmond® DEMO4 911 Carbide Segmented Diamond Demolition Blade, 4 in dia Blade, 1/4 in W, 5/8 to 7/8 in Arbor/Shank, Dry/Wet Cutting