Use for increasing ROM, eye/hand coordination, manipulation, endurance and sequencing. Base is 21-3/4"L x 14-1/2"W x 1-1/2"D. Includes six plastic rods: 3"- 18"H and 3"-13"H. Rod diameters vary from 1/4" to 1". Also includes 12 rings for each plastic rod. Disassembles and packs into the covered base for storage.