This remix allows you to transfer your Sunlu 1kg spools to fit on to your 4L Sealed box roller in a more fashioned fit, and also it can let Sunlu 1kg spools to work on Bambu AMS lite.
Inner diameter is same as Bambu Lab official spool. Outer diameter is opened up just a tad to allow for a more tolerable fit.
The 4L Sealed box roller is from Sealed box | Bambu Lab Wiki (https://wiki.bambulab.com/en/filament-acc/acc/sealed-box).
No support is required when printing, it's easy to print. Now your good to go!
Please let me know if you need other diameter size.