This 5 liter charred oak barrel is approximately 9″ from tip to tip and 7 1/2″ in diameter. A 5 liter barrel will hold a little over 1 gallon of your liquor. The 5 liter oak barrel will age about 8-10 times faster than the full size barrels they use in the whiskey distilleries. Our 5 liter barrel is our most popular with bars, restaurants and hotels because it is large enough to make a tasty barrel aged recipe for your customers but still small enough that it will make the batch nice and tasty in a fairly short amount of time.? If you really want to put a nice size barrel on display in your bar or restaurant then we recommend the 10 liter oak aging barrel.