This is the white plastic La Marzocco Linea PB cap for the steam valve knob. The remaining hardware are sold separately. This is a special order item shipped directly from the manufacturer separately from the rest of your order: in-stock units ship fast, while out-of-stock units typically require 1-2 weeks for processing before shipping. COMPATIBILITY Fits: La Marzocco Linea PB Replaces: La Marzocco part #F.1.035 Works with: Steam valve knob and hardware (sold separately) INSTALLATION Basic hand tools; low difficulty.