This is to help with storage and displaying sports balls. You may need to add some sort of rubber strip or even a rubber band to the feet for balls with less grip like some soccer and volleyballs. It can handle many different diameters. • Take note of the positive stop on the legs. This is for the bottom side of the stand and aids in assembly. • Simply print, slide in the legs, and super glue them into place. Design files from Brink Effects are provided for your reference only. By downloading the files, you assume responsibility to verify the design for your use and safety. Brink Effects cannot control how the files are used; thus Brink Effects does not hold any liability for the use of the files. Use at your own risk. Remember to keep small objects away from children and pets. Be cautious of sharp edges.