Floating shelves, perfect for gifts,knicknacks,or just to show off printed objects!!! made from scratch, use with 3m command strips so no nails are needed. the regular size is just column and the large are both marked. the large 3 slot is designed to cover 1-3 hooks so it can hold 3-15lbs. command strips are perfect as they hold true and remove with ease I will be updating with different styles soon just wanted this out there no supports are needed at all!!!!! print the hook with 50%infill or more for strength tight fit so there is no wiggle or play so i suggest u slide the hook to into slot and slide back and forth to break it in so it will take less effort to put on or remove print column with no supports print hook with 50% or more infill enjoy!!!!!!