Rubi Turbo Viper TVH-300 Superpro Hard Materials Diamond Blade (31938)Market knowledge and hard work allow RUBI to offer the building professional the TURBO VIPER TVH diamond blade. The TURBO VIPER TVH diamond blade is recommended for cutting of hard materials such as granite, rustic tiles, klinker, refractories, slate and, of course, porcelain tiles. The specific design of the diamond rim of the TVH diamond blade by RUBI offers faster cutting speed in the hardest materials without sacrificing the quality of the finish.