Suitable for Mercedes-Benz W129 W140 ignition lock cylinder external milling small key (2 keys) for older Mercedes-Benz car parts

"Oops! The key broke off in the lock on the front door" or "Help! My key won't turn in the lock!" Lock cylinders are a real minefield... half-cylinders, round, button, high security, 30x40... Stop! Let's get back to basics.