Proflow's billet overflow tanks are constructed from high quality 5 mm thick aluminium tubing with welded end caps. They can be used as a recovery tank as it features an internal return tube designed to empty once full. They have two AN6 ORB ports on the bottom and come with both barbed and AN6 straight fittings. They are available in a full polished or gloss black anodised finish and a billet mounting bracket is also included.