These plugs are solid wood and slide into the hole and sand flush. Bags of 50.The Kreg Maple Plugs for visible pockets comes in a 50-pack for added convenience. Most of the time pocket holes can be placed on the backside or underside of a project where they are hidden from view. From time to time however, you may find the need to place one in a visible location. These maple plugs can be glued-in and sanded flush to discreetly conceal the hole. The plugs are backed by a manufacturer"s limited 30-day warranty.