Fits together well. Well placed alignment guides for filament insertion. Filament insertion holes may need cleaned out a bit depending on your settings. Slight modifications of lid and base would be beneficial to create magnet insertion pockets so lid doesn't flop open.

Works extremely well for drying and spool weight in my AMS. Fits well in Bamboo and Sunlu spools. Had to draft and print washers for my AnyCubic spools.