M10 Bottomless Portafilter Body, Body Only A universal M10-thread bottomless portafilter body modeled after the older La Marzocco Linea-style body originally produced by Nuova Ricambi. Slightly thinner ears than genuine La Marzocco make it a versatile fit across several group styles. SPECIFICATIONS Wings measure 5.9 mm thick (vs. 6.6 mm on "standard" La Marzocco ears) COMPATIBILITY Fits: M10 thread handles; accepts any standard-size basket from 6g single to 21g triple Works with: Slayer, Synesso, E61, and Rancilio group heads, in addition to La Marzocco-style groups, thanks to its thinner 5.9 mm wings INSTALLATION DIY-friendly, basket and spring sold separately. PRO TIPS Basket and spring aren't included, and the right spring depends on your basket: start with the thinner 1.0 mm spring, and only step up to the thicker 1.2 mm spring if the basket feels loose in the seat, going straight for the thicker spring can make some baskets bind rather than seat properly.