Stainless Steel Ball Fidget Spinner By mtairymd in WorkshopCNC518Introduction: NullBy mtairymdm.youtube.com/user/boogiemonsterFollow More by the author: About: I like to design and build random things. More About mtairymd » Print STL file. Glue balls into pockets Balls: 3/8" diameter, Stainless Steel https://www.mcmaster.com/#9291k52/=18cpv92 End caps not shown. Download from here: https://www.instructables.com/id/Hex-Nut-Spinner/