... For high rigidity guide pin assembly 4.Materials: SUJ2 Guide Rod and BushParticularly for high rigidity guide pin assemblyThe ... arrangement density of steel ball on the retainer shall be 1.7 times more ... % . Productsprecision mould parts, standard and customized punches, guide pins, guide bushings, ejector pins, ejector sleeves, die insertsApplied inautomobile mould ...