Standard wires come with molded covers. If your wires are bare you can cover up with these durable vinyl covers for shroud, trapeze wires, stays, etc. Comes in 6 foot lengths. The H16 and H17 shrouds and forestays are 1/8". The H18 shrouds and forestays are 5/32". Many customers prefer to order the next size larger. They will fit just as well and are easier to install. These are the 1/8" version.