Lavina diamonds are the diamond tools for concrete preparation, polishing, renovation, and maintenance. They are flat inserted quick-change type and specially designed for use with Lavina grinding machines. If necessary, with corresponding adapters, they can also to be used on other grinders and polishing machines on the market. This C04 lavina diamonds has 2 round type diamond segments. High quality of 30# diamonds is used for the coarse grinding of concrete floor and terrazzo floor. Medium bond is used for the medium hardness of the concrete (PSI from 3000 to 4000). Sunny Superhard Tools provides you with various excellent diamond formulas for different applications. A package of 6pcs/box or 9pcs/box is available. Contact us now for getting the ideal lavina diamond tooling of your grinding & polishing projects. Optional Specifications Optional Diamond Grit 6#, 16#, 36#, 60#, 80#, 120#, 180#, 220# Optional Metal Bond extremely soft, very soft, soft, medium soft, hard, and very hard Optional Packaging 6 or 9 pieces per box Optional Painting Color High light or Matt, common colors are: orange, yellow, red, black, purple and blue Other services OEM/ODM service is available, such as logo engraving(free), painting color(free), and etc. SYF-C03SYF-C04