The image shows a box of stud-mount power rectifier diodes with attached leads (such as ZX25, ZX40, or ZX70A series/RSK-type rotating rectifier diode assemblies used in diesel generators and alternators).• Stud Mount Design: Threaded metal studs (such as 25A, 40A, or 70A ratings) designed to screw directly into a heat sink or mounting plate.
• Attached Leads: Flexible black insulated wires terminating in ring terminals for easy connection inside a rotating rectifier bridge or alternator assembly.