Premium cork map rails from Marsh have a heavy-duty premium tacking material called Plas-cork. Plas-cork is an all natural composite tack surface that is self healing and washable. Since the the tack material is denser and more consistent than natural cork its tendency is to have a far better grip on thumbtacks and pushpins. It is a full 1/4"" thick with a burlap backing for added support. Plas-cork will not dry out, crack, split or peel like regular pebble cork can. Premium Plas-cork map rails also give you the option of selecting either a natural tan or a softer more contemporary looking grey insert. The Aluminum trim that holds this premium tack surface is the same satin anodized aluminum as our ever popular cork map rails so you can use the same accessories with these. Accessories include the end caps, flag holder, map winder and combo clip hooks.