Sunny Superhard Tools offers a series of diamond tools for grinding and polishing, as well as floor coating removals. We established in 1993 and has developed various excellent diamond formulas for grinding and polishing different materials, such as granite, marble, and concrete. We have great metal bonds for different hardness of concrete floor and terrazzo floor. This arrow-type diamond grinding disc is designed to be used on Lavina S and Pro grinding machines. 16# diamond grit is used for coarse & aggressive grinding of the concrete. Very hard bond is used for grinding very soft concrete. We provide you with a series of diamond grits and bonds types for different applications. Lavina diamond grinding plate for grinding concrete floor. Arrow type diamond segments for coarse & aggressive grinding. A wide range of diamond grit and metal bond type to choose from. High performance, long lifespan and competitive price.   Note:  The QuickChange tool design for Lavina X machines fits also LAVINA S and LAVINA Pro models, but the old QuickChange tools designed for S and Pro machines are not compatible with the X-Series grinders. 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-C08SYF-C09SYF-C17SYF-C18SYF-C19