Fi-Shock SC-60 Yellow Screw-on T-Post Insulators, 25-Per Bag Two Molded parts ensures a tight, secure fit on all standard studded (1.25" and 1.33") T-posts Eliminates dislodging in high winds or under heavy loads Molded from high-density polyethylene with UV inhibitor to prevent arcing and provides long life for all-weather performance Yellow color 25 Insulators per bag