Washer for flexible conduit

This is a washer for flexible conduits. To be precise, I have designed it for 20 mm flexible conduit from Biltema, https://www.biltema.se/en-se/construction/electrical-installations/installation-piping/flexible-conduit-20-mm-x-25-m-2000057722. It consists of two parts, a larger part that you are supposed to slide onto the conduit, and a smaller part that you then slide onto the larger part. See attached photos. To use it for 16 mm flexible conduits, print it at 80% scale in X and Y, but keep Z to 100% scale.

This was my first design. As such, I am very pleased with how it turned out. I had a lot of help from my friend matsa, who introduced me to 3D design and 3D printing. Without his help, it would not have been able to do this at the time.