The flexible modular system allows an individual combination of the different components according to requirements and application. Five different tubing diameters (3.2 mm; 6.0 mm; 8.0 mm; 10.0 mm and 12.0 mm) can be used by changing the inserts. Unused ports can be sealed off with a blank GL 18 screw cap. Fully compatible with all the GLS 80 threads.