The price includes sets of 6 Inserts, is per day, and includes as many grits as necessary to achieve the desired finish. Grits of Diamonds available 14 grit through 120 grit Grits of Resins/Polishing Pucks: 50 grit through 1500 grit Strip-serts - Removing mastics PCDyma-serts - Removing hard coatings, prep for grout, thinset or overlay Type of diamonds used dependent upon hardness of floor. MOH's Hardness Scratch Test avaliable at no charge to test concrete. (This assumes all the tooling is used on this grinder only and is not used concurrently on multiple grinders) Tooling is also available for purchase.