We will soon offer you a new addition to the LT-40/Pzw 39 model kit, which is the new 3D printed tracks. Compared to the standard ones from the kit, they offer a greater level of detail and realistic appearance, even in this 1:72 scale.
They are intended for building kits marked 72960, 72961, 72962.
https://attack-kits.eu/swiss-light-tank-ltl-h-pzw-39.html
https://attack-kits.eu/light-tank-lt-40-machine-gun-version.html
https://attack-kits.eu/light-tank-lt-40-37mm-gun-version.html