The Medicine Ball Storage Tree fits assorted weight balls from Rubber Medicine Balls to Dual-Grip Medicine Balls. This storage tree is a convenient space-saving addition to any home gym or workout space with a need to store and organize their medicine balls. The adjustable design makes stacking them as easy as sliding them onto the appropriate level for the size ball. The top fastener can widen the storage bars from 5.5" to 6.625" at the top while staying 7" on the bottom. Be sure to place larger balls on the bottom and smaller ones on the top.