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Description
Replace your existing ROK plunger with our pressure gauge version. Simply raise the arms, undo the top bolt then remove and replace the plunger. Note - the plunger does NOT include an O-ring. Either swap out the existing one or order a new ...
Reviews
5.0
4 ratings
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The plunger pressure gauge is excellent for getting more data, though also confirms that it is tough to get consistent or high pressure without overwhelming the portafilter seal. Still love the coffee I can pull, the commercial plunger helps fine tune.
A
Anonymous · January 13, 2026
Great price for a gauge addition. An absolute must have if you are using a bottomless portafilter.
Extremely easy to install.
A
Anonymous · November 19, 2025
Game changer. I finally found my way to that perfect shot