All American Billet Radiator Overflow Tanks are machined in a similar design as the remote power steering reservoirs for a single under hood aesthetic when paired and mounted. Fully machined from 6061-T6 aluminum and available in a variety of finishes. Tanks are 2-1/2'' in diameter and available in three lengths, 10'', 12'', 14'' long. Each tank includes mounting two brackets and mounting hardware.