Tuff Jugs Ripper CapThe Ripper Cap isnt just fast, its the fastest pouring cap option on the marketpouring 5 gallons in a mind blowing 38 seconds! Thats up to 500% faster than a standard 5 gallon fuel container! Say goodbye to the waiting game and hello to instant fluid transfer like never before. The Ripper Cap will only work with Tuff Jug and is designed to work with top load tanks with a diameter of more than 1. 42".