La Marzocco Group Bayonet Ring gaggia/gaggia-italia-tell-d-90-e-90-steam-water-valve Mazzer Super Jolly Doserless Conversion

Mazzer Super Jolly Doserless Conversion Backing Plate

Forté All-Purpose Grinder Features

Confirm your portafilter uses M12 threading before ordering — ergonomic handles vary by thread size between manufacturers

Also available: just the coil

La Marzocco Group Bayonet Ring gaggia/gaggia-italia-tell-d-90-e-90-steam-water-valve Mazzer Super Jolly Doserless ConversionLa Marzocco Group Bayonet Ring Bayonet ring that locks the portafilter into the group on La Marzocco machines; wears with use and eventually causes the portafilter to seat loosely or engage incorrectly. COMPATIBILITY Fits: All La Marzocco groups INSTALLATION Requires group disassembly; best handled by an experienced technician. PRO TIPS If your portafilter feels loose or won't lock in fully at the usual angle, a worn bayonet ring is the most common