Prevent your cask ale from spilling out the bung hole by using this wooden keystone. * It inserts easily into the bung hole on the crown of your cask and the wood absorbs moisture to help create an extra-tight seal. * The keystone bung hole of your cask is essentially the same as its tap. If you donâ€TMt plug it up, the ale will flow, so get your wooden keystone bung now!

• Made of wood.
• Inserts easily into keystone hole of cask.
• Wood absorbs liquid and expands to create an extra-tight seal.
• Essential for cask ale dispensing.

Made of wood.UK BREWING