DIATOOL Diamond Mortar Raking Bit Tuck Pointing with Carbide Tipped for Granite Marble Concrete Masonry Stone Removals Vacuum Brazed 5/8 11 Thread(8 * 42mm)*5

Size--8mm diameter;42mm working length; Total Length:84mm; Diamond Grit #40/45; M14 Thread; Carbide Tipped. Wide Applications --Useful for mortar raking and brick removal,removing old mortar prior to repointing or removing blown, damaged bricks or natural stone. Good Finishing --It is better suited and easier to use on intricate and delicate work, particularly vertical joints and natural stone jobs,Use with a mortar raking blade for ideal results. Carbide Tipped Design-The 2-in-1 Carbide Tipped design and brazed grinding rods allow for more precise positioning, faster drilling, better sharpness and longer life. Machine --Angle grinder.(Pay Attention:It doesn't make holes.This is NOT a core bit for drilling.But it can be used for Mortar gap cleaning and grinding)