Bosch DD500 5-Inch Premium Segmented Tuckpointing Blade High-quality diamonds and easy-to-understand color coding system. Dry cutting. For mortar removal. For use in small angle grinder. 7/8 Inch, 5/8 Inch arbor Solid 0.25 Inch thick segment provides long life Fast cutting in most grout and mortar materials Premium diamond formulation for aggressive material removal