Ultimate Diamond Mortar Disc 115mm/4.5" and 125mm/5"Mortar Masonry Joint Raking Blade for All Angle GrindersUltimate Diamond Mortar Raking Blade has been designed with the professional user in mind, the disc has unrivaled performance in the hardest of mortars and gives an exceptional lifespan with 10.5mm segments and a high diamond to compound ratio.115mm/4.5" and 125mm/5"; Diamond Height 10.5mm; Raking Width 2.5mm; Bore Size 22.23mm; 10.5mm high segment offers 50% more diamond than most diamond mortar raking blades.Rakes the Hardest brick mortar joints with absolute ease.Ultimate quality mortar joint raking and tuck pointing diamond blade.Rakes the Hardest brick mortar joints effortlessly.Precision engineered to ensure true running and prevent damaging the adjoining bricks.