Homebrew Keg Post Types and Sizes

homebrew keg post types and sizes

Before you purchase any replacement posts for your keg, you’ll need to determine the brand/maker of that keg. You can figure this out by finding the stamp or markings on the side of the keg.

  • Cornelius, Ball Lock (all types) GAS 19/32″ – 18 LIQUID 19/32″ – 18 – View +
  • Cornelius, Pin Lock (all types) GAS 19/32″ – 18 (2 Pin) LIQUID 19/32″ – 18 (3 Pin) – View +
  • Cornelius Spartan 19/32″ – 18 19/32″ – 18 – Shop ++
  • Cornelius R (Pin Lock) 19/32″ – 18 (2 Pin) 19/32″ – 18 (3 Pin) – Shop ++
  • Firestone V, VI & Super Challanger, Ball Lock* GAS 9/16″ – 18 LIQUID 9/16″ – 18 – View +
  • Firestone Challenger, ball lock (racetrack) GAS 11/16″-18 LIQUID 3/4″-18 – +
  • Firestone, Pin Lock (all types) GAS 9/16″-18 (2 Pin) LIQUID 9/16″-18 (3 Pin) – View +
  • Firestone A (Pin Lock) 9/16″ – 18 (2 Pin) 9/16″ – 18 (3 Pin) – Shop ++
  • Firestone R (Pin Lock) 9/16″ – 18 (2 Pin) 9/16″ – 18 (3 Pin) – Shop ++
  • Firestone Challenger 11/16″ – 18 3/4″ – 18 – Shop ++
  • Firestone Super Challenger 9/16″ – 18 5/8″ – 18 – Shop ++
  • Firestone V Challenger 9/16″ – 18 5/8″ – 18 – Shop ++
  • Firestone VI Challenger 9/16″ – 18 5/8″ – 18 – Shop ++
  • John Wood 85, Ball Lock (racetrack)* GAS 11/16″-18 LIQUID 3/4″-18 +
  • John Wood RA or RC, Pin Lock GAS 19/16″-18 (2 Pin) LIQUID19/16″-18 (3 Pin) – +
  • John Wood 85 11/16″ – 18 3/4″ – 18 – Shop ++
  • John Wood RA (Pin Lock) 9/16″ – 18 (2 Pin) 9/16″ – 18 (3 Pin) – Shop ++
  • John Wood RC (Pin Lock) 9/16″ – 18 (2 Pin) 9/16″ – 18 (3 Pin) – Shop ++
  • AEB, Ball Lock GAS 19/32″-18 LIQUID 19/32″-18 – View +
  • AEB Kegs 19/32″ – 18 19/32″ – 18 – Shop ++
  • Super Champion 19/32″ – 18 19/32″ – 18 – Shop ++

* The vast majority (99%) of Firestone Ball Lock Kegs on the market use the same post except for the original Challenger, which had “racetrack” style lids. Racetrack style lids had straight sides like a race track and are rare. All other kegs had standard rounded sides.

+Thank you to Keg Connection for this information – Complete Lineup of Posts and Poppets at Keg Connection

++Thank you to Keg Outlet for this information – Complete Lineup of Posts and Poppets at Keg Connection

Related: What’s the Difference Between Pin Lock and Ball Lock Kegs?

What about Wrench Sizes?  Find Compatible Tools

ball lock post sizes

Best Price of the Year on Premium Remanufactured Ball Locks Kegs!

18+ Liter Ball Lock Keg | Fully Remanufactured (AEB/SAFER/Cornelius) | SEE DESCRIPTION

From Keg Connection…

These are top-tier, remanufactured Corny kegs made of stainless steel. With stainless steel costs climbing and high-quality used kegs becoming increasingly scarce, this is an offer you won’t want to overlook.

Every keg in our collection undergoes a comprehensive refurbishment process. This includes deep cleaning, machine polishing, and the replacement of o-rings on the lid, PRV, as well as liquid and gas dip tubes, in addition to two o-rings on each post. These kegs are all sourced from elite brands, including AEB, SAFER, and CORNELIUS.


For a short time these are on sale for $69.95. Considering the condition of these kegs and everything else that’s going on, this is a great deal.

18+ Liter Ball Lock Keg | Fully Remanufactured (AEB/SAFER/Cornelius) | SEE DESCRIPTION


Ball Lock Vs Pin Lock Kegs!

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