Includes 6ft. of #4 braided stainless steel line, firewall pass through grommet, 1/8" npt female right angle to -4an male fitting, -4an male to 1/8" npt male fitting, -4an male to 1/8" npt female fitting, 1/8" npt to 1/4" npt adapter bushing. recommended for use with fuel pressure gauges. for use with mechanical pressure gauges and for remote mounting of electric gauge pressure senders.