At the push of a foot, the Quick Cavaletti will help you through numerous exercises. With heights from 6", 8", 10" and 12", you can even set a low grid or bounce workout. Sold in pairs, these Cavaletti's will work beautifully with 4" Poles, 3 1/2" Poles and 3 1/2" x 3 1/2" (4x4)...