1.Custom square connector 2.ISO 9001:2008 certified 3.Material include most ferrous ... , plating ( nikel, chrome, zinc), powder coating, etc.MACHINE SPECIFICATIONCNC VTL ...................... 15 SETSCNC LATHE .................. 40 SETS DESK LATHE.................... 50 SETS CNC GEAR ... after-sales services.OTHER MAIN PRODUCTS: FACTORY OVERVIEW: Custom square connector