The MEXCO RB X10 Radius / Curve Cutting Diamond Blades are designed to be used with 4.5in and 9in angle grinders for cutting curves and radii with ease. The radii of the curve can be altered by tilting the angle of the blade in the cut. Especially suited for cutting into concrete, natural stone and paving slabs, making them ideal for landscape gardeners, driveway installers, general builders and anybody doing decorative patio work. 115mm x 22.23mm Curve Cutting Diamond Disc The Radius Blade is designed to be used on angle grinders for cutting curves and radii with ease, this product is especially suited for cutting into concrete, natural stone and paving slabs, making them ideal for landscape gardeners, drive way installers and general builders. * Concave designed centre to cut a Radii accurately * Fast Cutting * For use on Angle Grinders Mexco Diamond Blade 115mm