The AGS Fuel Line Repair Master Kit, No. FLRK-15, contains all the connectors, compression unions, adapters, and nylon fuel line needed to repair and make quick and cost-effective 1/4", 5/16" and 3/8" fuel replacement lines. The push-button thumb release makes connections fast and easy, according to the company, and the nylon lines hold up to 200 psi. The complete kit contains components for both nylon and steel lines for both domestic and import applications.