Pinlock insulator for T-posts. Heavy cross sections withstand the pressure of high-tensile fencing. Large flange prevents shorts and arcing. Fits 1.25 and 1.33 ft./lb. posts. Molded of high-density polyethylene. Performs in any climate. Color: Black. 25 per bag. Style: Snap-on, Post Type: T-post, Post Location: Line post vertical, Material: Polyethylene, Extension Distance: 1, Color: Black, Post Attachment: Snaps on.