The roll corner insulator bolt-on is easy to install, suitable for cord, plastic wire and metal wire. Can also be used as a roll corner insulator in combination with the reel corner posts or an iron fencing post. The insulator has an innovative design, which means the wire cannot fall from the roll on the metal. This makes the chance of short-circuiting extremely low. The wire length for assembly is approximately 40mm and is supplied including a bolt and a washer.