These modular hooks come with support to screw on the lateral edge of a table. Front and back support have a stop at one of their extremity in order to stop hooks from falling. Hooks are easy to move or remove, you can slide them along the support when there is no weight onto it. Otherwise the weight on the hook might block the translation. From now just 3 types of hooks are designed. Other kind should come soon ! I advise that you print the pieces so the layers are perpendicular to the length of the support. This should provide stronger pieces.