Radium Y-Adapter Block Fittings -6AN Male, -6AN Male, and -6AN Male Radium Y-Adapter Block Fittings -6AN Male, -6AN Male, and -6AN Male 6AN Male, -6AN Male, and -6AN Male A one piece CNC machined 6061 aluminum adapter that insures the most direct path for unrestricted flow. Lightweight and compact for tight areas, the Y-fittings secure directly to hose ends without the need for extra adapter fittings. Bright-dipped green anodized surface finish for corrosion resistance, these Y-fittings can be used for multiple fluids including: alcohol (ethanol/methanol), gasoline, coolant, water, air, oil, etc. A one piece CNC machined 6061 aluminum adapter that insures the most direct path for unrestricted flow. Lightweight and compact for tight areas, the Y-fittings secure directly to hose ends without the need for extra adapter fittings. Bright-dipped green anodized surface finish for corrosion resistance, these Y-fittings can be used for multiple fluids including: alcohol (ethanol/methanol), gasoline, coolant, water, air, oil, etc.