Fi-Shock SC-160W White Polytape T-Post Insulators, 25-Per Bag One molded piece that snap on and around all standard (1.25" and 1.33") stubbed T-posts Can be used with wire, polytape up to 2-inch wide and ploywire Molded of heavy-duty polyethylene, large flange prevents arcing Includes a tape holder which unlocks for easy installation 25 Insulators per bag