5. Russell Twist-Lok fittings are some of our favorite fuel plumbing supplies—hoses are easy to assemble by just lubing the hose end and pushing it over the barbed Twist-Lok fitting. Life expectancy is also typically longer than race-only stainless braided line. The kit includes 8 feet of Russell -6 AN Twist-Lok fuel hose (rated at 250 psi), one straight -6 AN Twist-Lok junction, and two 90-degree -6 AN fittings. A brass tube adapter fitting and compression nut sleeve are also included to take fuel off the mechanical pump at 7 psi.