Retractable pins, located under the workpiece carrier, allow :

> guiding the workpiece carrier round bends with four pins on straight sections
> guiding the workpiece carrier round bends with two pins (the other being retracted).

The modular design of TLM 100 and TLM 2000 transfer system as well as the use of standard elements allow a great flexibility in the conception of assembly lines and reduce the time necessary for survey and implementation.