Multiples rectangle cover / Caches tube rectangle

I'm a welder and often work with rectangle tube, this is a collection I've made for myself to cover or fill thoses tubes.Because I'm lazy to carry them on USB or on different worplaces here they are.Feel free to download only the cover you need, the dimensions are in the name and that's all you need.Inside the cover there is a slight inscription if you ever print multiple and mix them by error.All the cover goes out of the tube of 3mm, A few shock with a hammer make them goes inside by brute force.Don't hesitate to send a picture of thoses covers in place. If you have a suggestion of size that need to be added tell me in the comment, it will be in there in the future.I PERSONNALY BUILD ALL THOSES MODEL so ___ off with copyright, thoses are the model I've made for my usage and work with it daily. Everything here is my creation.Je suis un soudeur qui travaille souvent avec des tubes rectangles acier, des profilés métalliques carrés. C'est une collection de cac