Center Hole Ribbed Boat Pontoon Fender 6" x 15" 4pcs Inflatable Vinyl Mooring Bumpers Guard Dock Docking - Black Boats up to 20-30 ft: 6.0" x 15" Center Hole Color: Black Quantity: Set of 4 Inflatable Boat Fenders Brand: North East Harbor | Vertical ribs for extra protection Super-soft fenders are non-abrasive