... types12,Button bit: small tooth, big tooth,conical inserts,chisel inserts13,Packing: in wooden case or steel case14,Payment term ... Tricone Bittricone bit Cutting structure: very long widely spaced ,chisel-shaped inserts and considerable cone axis offset against center line ... formation tci bits maximize the use of bothconical and chisel tungsten carbide inserts of large diameters and high projection. ...