Rancilio Group Dispersion Nut With Counter-Sunk Screw

Designed for the Rancilio RS1 model, but will fit all current commercial and domestic Rancilio group heads, including all versions of the Silvia. The kit includes one M5x16 mm flat head counter-sunk screw and one new version counter-sunk jet breaker (21 x 5.1 mm). This should be paired with a screen that has a counter-sunk area like the Rancilio Specialty Precision Screen or E&B Lab Nanotech Shower Screen . Cross-references : Part number Manufacturer 10701784 Rancilio