Mazzer 57.5 mm Doser Mounted Tamper la-marzocco-gs-3-parts/gs-3-coffee-boiler-and-group effective 11/11/2015)

effective 11/11/2015)

so if your machine already has a black switch installed

and the PTFE ball seal housed inside the nut

Lever Group Pin

and four group units

Mazzer 57.5 mm Doser Mounted Tamper la-marzocco-gs-3-parts/gs-3-coffee-boiler-and-group effective 11/11/2015)Mazzer 57. 5 mm Doser Mounted Tamper Bolt on espresso tamper that mounts directly to any Mazzer grinder doser unit, for use with most commercial espresso machines. SPECIFICATIONS Tamper size: 57. 5 mm Requires a portafilter basket with an inside diameter larger than 57 mm COMPATIBILITY Fits: All Mazzer espresso grinder doser units Works with: Most commercial espresso machine portafilter baskets larger than 57 mm inside diameter INSTALLATION Simple DIY