Bezzera / E61 Locking Nut Protector – 22mm Wrench

Protect your (locking-)nuts! This is a protective sleeve designed for the 22mm hex nuts commonly found on Bezzera espresso machines and various E61 group head assemblies. Chrome-plated brass components are highly susceptible to scratches and "rounding" when using standard steel wrenches. This buffer acts as a sacrificial layer to preserve the aesthetic and structural integrity of your machine during maintenance. Technical Specifications Internal Fit: 22mm Hexagon Geometry: Slotted "C-shape" design allows the protector to be slid sideways over copper pipes or tubes without disconnecting them. Outer Diameter: Increases the effective wrench size. Depending on your print settings, use a 24mm wrench or an adjustable spanner (Engländer). Compatibility: Confirmed for Bezerra (Mitica, Magica, Aria, etc.) and most standard E61 espresso machine boiler/group connections using 22mm fittings. Print Recommendations Material: TPU works excellently for grip and durability. Printing it in PLA works, bu