... bit and flat cutter bits for excavate coal machine as the replacements of kennametal. Such as U76,U82,U84,U85,U92,U94,U95 ... bolting rod.6.All kinds of casing bits for shield machine and construction tools.7.Round road planing bit for road ... milling machine and trenching machine. Shank dia:19.4mm,25mm,30mm,33mm,38mm,etc ...