Wega Bottomless Portafilter A complete bottomless (naked) portafilter for Wega machines, including a triple-shot 21-gram basket and retaining spring, a favorite upgrade for baristas who want to visually diagnose channeling and extraction issues in real time. SPECIFICATIONS Ear dimensions: approximately 26.6 mm long x 6.4 mm thick x 5.8 mm deep Includes 21 g triple-shot basket and retaining spring COMPATIBILITY Fits: all Wega models, and most E61-style groups including ECM, Elektra (commercial), Expobar, Isomac, Quick Mill, and Vibiemme INSTALLATION An easy DIY swap for the portafilter itself, locks into the group like your existing portafilter. PRO TIPS Not a fit for the Elektra Micro Casa Semiautomatic or Micro Casa Lever, those use different ear dimensions despite Elektra's commercial E61 line being compatible. Bottomless portafilters expose puck prep flaws that a spouted portafilter hides, if you switch to this and suddenly see spritzing or uneven streams, that's channeling that was there all along, not a new problem caused by the naked filter.