Seven Sins Choppers SKELETON KEY OIL TANK is handmade in steel with slightly domed end caps, 5" 14 gauge tubing, 1/8 npt return & feed bungs, 3/8" top mounting bungs, a sleek vented center fill cap, and a custom skeleton key stash tube that runs about 5" deep. The tank is 8" long and very handsome in appearance. These tanks will help take any build to that higher level. Key caps come in brass, steel or aluminum and come with a solid brass 17th century reproduction skeleton key. These tanks come in 2 versions for Triumph and Harley style builds. The Triumph version comes with a standard triumph filter bung (standard and stainless filters are available). The Harley version has 1/8 npt bungs for return and feed and an extra 1/8 npt bung on the top for venting. Other customizations are available such as drain plugs, tube length, cap material etc...and are priced accordingly. We also take all our tanks to a finishing level; all welds are shaped and smoothed over and each tank is coated in House of Kolor premium primer...these beauts are paint ready! You can also choose to have us paint your tank in any solid color or metal-flakes. Intricate and wild custom paint jobs are also available and also priced accordingly. Please allow 5-6 weeks for production; these tanks are very time consuming! If you need a standard tank that was just thrown together, there are plenty of companies out there that produce factory run-of-the-mill tanks; this is not one of those tanks..not even close. 100% TIG welded and pressure tested. Made In USA.