I designed these hooks for the rim of my pool so that I can hang a plastic basket for beach balls, pool toys, etc. Two hooks or more will have to be printed and resized as needed. I printed the first prototype too big so I went ahead and shrunk it a bit and printed two at a time. I printed at 50% speed with an infill of 60%. They ended up working great and have a tight grip on the pool rim. I cut two slots in the side of a plastic bin to hang on the hooks. I finally drilled some holes on the low side of the bin to drain any water that gets inside. My daughter will be using this to keep all of her smaller pool toys in.