Aluminum oil cold joint for automobile fittings Describe: CNC-machined from 6061-T6 aluminum. Size: AN10-1/2NPT ,AN10-5/8-24 AN12 TO 1/2NPT,AN12 TO 3/4NPT Surface Color:Blue,Black Black anodized for great appearance and anti-corrosion. Suitable for most fluids . We have different auto parts,oxygen sensor spacer, o2 sensor tool,Car Antenna,valve caps,jdm car accessories. We can also customize products according to your drawings. Product photos