Fittings: 6AN male to 6AN female, with 1/8" NPT female side port, 360 degree rotatable, suitable for all kinds of 6AN connect. Oil pressure gauge thread: 1/8" NPT type. Material The pressure gauge is made of stainless steel housing, while the fuel pressure output joint is made of aluminum alloy, which is, hard and corrosion-resistant.
eBay