So we have been using a name brand chain cover for our 80 chain and every single time we would go and put them on they would pop off and break very quickly, and with them costing $10 a piece for a half link I thought there was a better way. So i took the old design and than made my own changes making it the full link cover and costing only $0.26 a piece as I'm using BambuLabs PLA Tough and its working great. So the main thing is, I didn't want to keep having us spend $10 just to have it pop off and break where as my design is nice and tight and holds on.