Allstar aluminum fuel line is seamless and supplied as a 25 Foot coil. This line is 5/8 Inch OD with a 0.550 Inch ID, 3003 grade with a 0.035 Inch wall thickness, rated at 358 PSI working pressure and 1792 PSI burst pressure. Use with ALL50324 aluminum tube nuts for 10 AN or ALL50334 aluminum tube nuts.