T-post offset insulators are used to extend your electric fence wire 4" from the t-posts. The T-Post off-set Insulators are easy to install, simply clip the T-Post Off Set Insulator around the T-Post. T-Post Off Set Insulators are made from high quality UV-resistant plastic, this electric fence accessory is a must have item for securing conductors such as poly wire, poly ropes, poly tapes, aluminum wire and any other electric conductor. This insulator can accept conductors up to 3/16”. Available color is yellow in a 25 pack.