3 Pack - 7/8''-5/8'' Arbor 4-1/2'' Premium Blue Boulette Tuck Point Blade for Concrete, Mortar, Brick, MasonryPRODUCT DESCRIPTION 7 8'' 5 8'' Arbor 4 1 2'' Premium Blue Boulette Tuck Point Blade Concrete Mortar 7 8'' 5 8'' Arbor 12mm Rim Suitable For We Dry Use Designed wits 12mm Segments & a Superior Formulation For Extremely Fast Removal Of Grout and other Heavy Materials Features Wide U Gullets, Cooling Holes, And A High Number Of Segments For More Aggressive Cutting Application For Concrete, And Mortar Joint Removal Types Of Equipment: Angle Grinder,