More area and smoother transitions from the inlet to the outlet, resulting in less restriction than any other fitting line. Aeromotive custom fittings, adapters, and hose ends are a step above the norm with uncompromised fuel flow and positive sealing. Constructed of 6061-T6 aircraft aluminum or stainless steel, each part is CNC-machined for a precise fit and unmatched flow. Billet aluminum fittings are anodized bright dip black for corrosion protection. Aeromotive fittings are compatible with gas and alcohol fuels.