ECM E61 Group kit Espresso Machine Brew Group Revision Full Replacement SetThis set contains the following components:1 x E61 inlet valve top including seal 55mm1 x O-RING seal 0128 FKM - ring thickness 2.62 mm1 x outlet valve including seal for pre-brewing chamber E61 52.8MM1 x water filter ø 8.5x22 mm1 x E61 outlet valve bottom including seal1 x spring ø 14.6x34 mm for E61 outlet valve - reinforced version for vibration pump machines3 x flat seal EPDM 15.5x7.5x4 mm 1 x spring ø 14.6x21 mm1 x flat seal made of Teflon ø 26x21x2 mm3 x flat seal made of Teflon ø 35x30x2 mm2 x spring ø 14x45 mm1 x camshaft for brewing group E61 Fits: ECM SynchronikaECM Technika IV (newer models with ECM E61 group)ECM Technika IV Profi (newer models with ECM E61 group)ECM Technika IV WT-WAECM Mechanika IV (newer models with ECM E61 group)ECM Mechanika IV Profi (newer models with ECM E61 group)ECM Mechanika IV WT-WAECM ControventoECM Classica IIECM Classica II PIDECM Technika V Fits alsoExpobar - Expobar Brewtus IVRocket - Mozzafiato Please note that this set will fit also to other E61 group heads(Rocket, BFC, SAB and other), but some of the parts may vary.