Last one available. I purchased this new for a Matchless DC-30 and have stored it in a smoke-free environment. Functionality has been confirmed. Weber WZ34 Solid State Rectifier Weber's solid-state rectifier allows you to achieve solid-state rectification simply by replacing the rectifier tube in its socket without any special modifications. This excellent product incorporates silicon diodes for rectification, resistors for voltage drop, and a power thermistor that replicates the operating curve of a vacuum tube, all within a copper cap. It can be used with confidence even in models without a standby switch. This is a GZ34/5AR4 compatible diode rectifier unit. How about using it as a replacement for GZ34 or 5AR4? Weight: Approximately 80g