... 1.WEAR-RESISTANT STEEL CASTINGS 2.HIGH RESIST WEARING OEM ALL KINDS OF CRUSHER SPARE PARTS HAMMER 1.hammer,the parts name is ... .the material is high manganese steel parts4.we can supply all kinds of crusher parts, such as jaw plate, concave, liner, hammer, cheek ... very plenty.6.we have got the certificate of ISO9001:2002, ISO14001:2004,GB/T28001:2001 OEM ALL KINDS OF CRUSHER SPARE PARTS HAMMER