25 Pack, White, T-Post Insulator, For Equip Rope, Coated Wire, & Large Diameter Fence Materials Up To 3/8", Fits 1.25 & 1.33 LB/FT T-Posts, Large Flange Prevents Arcing, Snaps On & Around Posts, Molded Of High Density Polyethylene With UV Inhibitors For All Weather Performance.