best travel coffee mugs for long commutes-11 mm Copper Ferrule (Special Order Item)

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This is a special order item and will ship separately.
Please allow 6 - 10 business days (typically, and if available from our supplier) for the item to be processed prior to shipping.

"11 MM.FERRULE WITH 3.4 MM.HOLE", used with the 1/4" nipples to accept the longer pressure gauge fitting. It's really just a loose pipe end cap.

La Marzocco part #: L137/3.