Use these little printed hooks with Loom Bands to keep your loose filament bundled up and not tangling up.A small item that take just a couple of minutes at 0.1mm step to print.3 hooks, one to use near the free end and two to use about the circumference, helps to keep you loose samples of filament neat and tidy and for larger bundles of filament you can lace the bands together.Print at 0.1mm step and with no brim