RB X10 Radius / Curve Cutting Diamond Blade 115 x 22.23mm - MEXCO RBX1011522, 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. MEXCO RBX1011522 RB X10 Radius / Curve Cutting Diamond Blade 115 x 22.23mm