The beads in this Necklace Collar are 8 mm or smaller.  I try to use larger beads, however this will look great on a short haired dog.  Or a dog that needs to have haircuts.  Love the color....and would love to see it on a white poodle or Maltese.  The Necklace Collar is 15 inches and is for decorative purposes only. It is not to be used as a regular collar. Never attach a leash or tags to this necklace.