This portafilter body is modeled after the La Marzocco old version Linea portafilter bodies. They will accept any M10 thread standard handle, any 3/8" BSP spout and any standard size and volume portafilter basket from the 6 gram single to 21 gram triples. The wings measure 6.0 mm in thickness. Also suitable for Slayer, Synesso, E61 and Rancilio groups heads. Basket, spring and spout not included. The spring selected to be used will be dependent on the style and shape of the basket used, so in most all cases go with the thinner 1.0 mm spring and if that feels too loose get the thicker 1.2 mm spring.