Russell Fuel line adapters can connect to 3/8" or 1/2" aluminum tube to -6 or -8 adapters. These fuel line adapters feature a unique crimp design which now eliminates tube flaring. Available in male or female ends for 3/8" or 1/2" tubing these adapters are offered in an anodized Red/Blue finish, or Black/Silver finish to complete your customized look.