These top quality aftermarket units are compatible with the original GEA assembly. No buttonsor levers neededto start or stop vaccum, and the vent unit help move milk away from the teat faster. If goat kicks it off, it shuts off automatically. This cluster is suitable for both bucket milkers and pipeline setups. Cluster includes all parts shown above. If you want to shutt off each line individually, please orderinline shutoffs. We also stock replacement part for this unit. You can chosse for standard goats or Nigerian Dwarf.