concrete mixer batch plant mixer arm spacer material:hi-chrome OEM is available certification:ISO9001:2008 Please provide us the brand of the mixer, specification, production date. If that can't corfirm the products size, then you can provide sample or drawing;concrete mixer spare parts1,wear-resisting alloy casting parts2,material: High chromium, Nickel-chromium3,Brand:NFL4,packing:standard ...