Fast Back Excalibur Fast Back Sale! from 8000 /per Size Head - Xs Head - XXS Heel - M Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. The Excalibur is a nylon poly blend with core construction. This best seller is medium in diameter and weight. Core construction Durable Reduced body, no bounce Swings consistent in all weather Qty available:3