Expansion Cap N
The Expansion Cap N (GFA-C83) is an end-fitting accessory designed for the Green Frame GF-N Ø 28 mm tubular system. Made of aluminium, iron and rubber, it uses a screw-tightening mechanism that expands the rubber section to secure the cap firmly inside the tube. Weighing 24 g, it provides a reliable and compact solution for sealing and finishing tube ends within Green Frame assemblies.

