Flat shower screen upgrade kits for electric espresso machines comprising filters, seals, jet breakers, mounting screws, and wrenches; parts and accessories for electric espresso and electric coffee machines, namely, filters not of paper, filter baskets, jet breakers, seals, gaskets, tampers, distributors, pitchers, dosers, rinsers, knock boxes, portafilters, portafilter components, tamp cradles, coffee funnels, and shower screens