paper spool protector

Environmental protection is the trend of human development, filament spool will definitely replace plastic spool by paper spool. At present, paper spools are mostly used on 1kg filaments. With the diversity of users' needs, some users tend to like the weight of each spool filament to reach 3kg or more. This is a huge challenge for the paper spool, maybe you need this protector to protect the paper spool from damage.