Tianli Hand-held diamond grinding block for luxury stone ：

Coarse Grinding (Gray Block): Removes saw marks, sharp edges, and forms the profile.

Fine Polishing (Blue Block): Eliminates scratches from coarse grinding and delivers a high-gloss, mirror finish.

Application: Ideal for handheld machines to process edges of quartz, marble, granite, and sintered stone countertops. Must be used with water (wet polishing).