The CorePlus Mortar Raking Diamond Blade has hard, 10mm tall segments, specifically designed for removing a range of mortars prior to pointing. A precision-engineered, high-grade steel tensioned core ensures that the blade spins true. It features a long-life bond formula, specially composed for mortar raking. There is also a high concentration of premium-grade diamond within the bond. Manufactured to EN 13236 quality standard. The CorePlus MR115 Mortar Raking Diamond Blade has the following specification: Diameter: 115mm Bore: 22.23mm Segment Height: 10mm Segment Width: 6.4mm