... Mould design quick sample 4Professional in Aluminum OEM Hinge Aluminum Heavy Duty HingeSpecification:Material: Alluminum Alloy: 1x,2x, 3x, 4x ... Turning, Tapping, Shearing, Insulation, Platic forming, HydroformingApplication:The extruded aluminum ballast is our top of the line magnetic ballast ... . The superior cooling and rugged design of extruded aluminum will give the commercial or hobby grower ...