Demo Raptor Extreme Multi-Purpose Demolition Diamond Blade Extra long life & fast clean cut makes the Demo Raptor Blade the essential blade for hand-held tools. Diameter: 115mm (4.5") Bore: 22.2mm Max Speed: 13 200 RPM Designed for CUTTING Lightweight concrete/Aerated concrete (e.g. Hebel®) Bricks Concrete Pipes Steel PVC Pipes Wood Aluminium Colorbond EXTREME performance Vacuum bonded diamond particles are fused directly to the steel core creating the strongest most durable heat resistant bond available when cutting without water cooling. Fast clean cut Perfect for emergency service departments For use with Portable Saws,Angle Grinders, Chop Saws & Demolition Saws.