New Haven Piano Skid Boards are constructed of seasoned hardwood. The joints are mortised and bolted. The side rails have webbing slots - rope holds that are securely attached on the underside of the piano board. Universal boards have both web strap slots and ‘E’ Series track for strap use, [straps not included]. The ‘Flared’ style Skid board has a layer of “Dreadnaught” padding, covered with durable canvas to protect expensive piano finishes. Available in stock sizes of 5’, 6’, 7’, 9’.