Use this keystone to seal the bung hole of your cask and you wonâ€TMt waste a drop of your real ale! * This sturdy plastic keystone fits snugly in the bung hole of your cask and creates a tight seal so you donâ€TMt lose any real ale during transport. * Donâ€TMt lose your precious ale. Get your plastic keystone bung now!

• Made of plastic.
• Easily inserts into keystone hole on cask.
• Helps prevent cask ale from spilling out of keystone.
• Essential piece for cask ale dispensing.

Made of plastic.UK BREWING