Insulators allow you to fasten electrified wire to posts without losing energy through the post.
Our Zareba® 4 Inch Fin Tube Insulator is made of durable, non-conducting UV-stabilized polyethylene. Designed for use with steel wire, the fins of this insulator prevent slipping, holding snugly in place. Its extra thick walls prevent voltage loss. 25 per package.
For wood posts: Secure insulator with 2 inch barbed staple (staples not included). Can be used with high tensile fence systems.
Easy attachment to your wood fence post with staples
Extra-thick tube sleeves prevent voltage loss
Use with high tensile steel and aluminum wire
UV-protected plastic polyethylene
25 black insulators per package
Zareba® is the largest manufacturer of electric fence systems offering durable, reliable electric fence products for all of your animal fencing needs.
Does it work to use tube (fin) type insulators on t-posts with wire t-post clips for 12.5 hi-tensile electric fence?
Question by: Jonathan Miller on May 23, 2026, 9:03 PM
Thank you for contacting us. Yes, tube (fin) type insulators can work on T-posts with wire T-post clips for specifically 12.5 gauge hi-tensile electric fence wire, as long as the insulators are rated for hi-tensile electric fencing and are installed so the energized wire does not come into direct contact with the metal clips or the T-post itself.
Answer by: Melissa (Admin) on May 25, 2026, 11:04 AM