Check the listing for details. 3"round diamond grind tool 16 grit medium bond for concrete prep-STI prep/master. Condition: New. Listed at 49.00 USD. Normal 0 false false false EN-US JA X-NONE Metal Bond diamond grinding tools for concrete floor grinding (for STI Prep/Master grinding machines or magnetic universal plates) 16/20 grit medium Bond with 6 segments thick diamond segments make grinding jobs efficient and durable. 16/20 grit is good for coarse grinding and removing thinner coatings such as residues of glue. 6 segments for more aggressive floor profile and quickly resurfacing than more segments. Medium bond matrix is designed for medium concrete floors. Shipping Policy Item can only be shipped to PayPal confirmed address. Return Policy We accept return only when the item is new/unused and in original box. Customer is required to pay your own shipping fee if not the reason of defect