This is a wall, shelf, stud, or other vertical surface mountable hook. It is designed specifically to hold 1.5" vacuum hose for workshop power tools and dust collection, but can be used for many things including garden hoses (if drained) and extension cords. Use two #9 or #10 countersunk screws. Do not overtighten the screws, as it will split between the layers. Print with the side on the print bed and no supports are required. This also puts the "grain" of the print along the load path so the part will be much stronger when loaded up. Access holes for the screws are provided. Hope you enjoy!