If you haven't yet seen the coloration, or 'Tiger Stripes', that appear when good espresso is pulled through a bottomless portafilter–you're really missing out. The Rocket Espresso 58mm Bottomless Portafilter offers a clear view into the extraction process as rich hues of brown and caramel coffees are pulled through your portafilter only
4.4
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This is just as sturdy and well-made as Rocket's portafilters, but it has a different handle made of bakelite and lacks the iconic R stamped emblem, so I removed one star for that.