From Marcrist
The Marcrist BF850 is up to 16 times quieter than a standard diamond blade, making it great for sites close to built up areas. A hardened, high tensile steel core is further strengthened with the addition of 2 reinforcing plates. The noise reduction is a combination of the special armour-plating, materials and the unique diamond design. Features & Benefits High quality Long lasting Proven reliable Marcrist technology High performace for the home or tradesman Warranty: 1 year Suitable for: Cutting Concrete Products, Building Materials, Granite