Over the years, Moodhoops have come in 3 tubing thicknesses: 5/8″ – 3/4″ – 7/8″ Most common tubing sizes used for Moodhoops are 3/4″ and 5/8″ tubing Larger 18650 batteries (pictured below) were used only for 38″ hoops or bigger that used 7/8″ tubing. 7/8″ hoops made before June 2016 use a 18650 battery. 7/8″ […]