... (extra features)Button bit,saw teeth1) Y-Conical teeth 2) X-chisel teeth3)K- wide teeth4)G- Gague protectionMaterialAlloy ... boring, and underground foundation work all over the world. 2> Do you want to learn more about our produtcts? ... 40Very hardQuartzite, Chert, Basalt Granites, Pyrites etc.795.2-174.63 3/4-6 7/8294-53980-40Contact ... information TCI Bit 165 mm with 3 1/2" REG Pin for Hard Rock