... Material50MnQualityHeat-treated,HRC49-56,Depth 5-8mmColorYellow or BlackTechniqueForging/CastingFinishingSmoothCerificateISO9002MOQUnlimitedOur company has 20 years experience in manufacturing all kinds of excavator ... .Company4.Technology More models below are available from us(not limited) D3C,D30,D4C,D4D,D40,D5,D50,D6D,D60,D7G ...