The Zareba® Black Wood Post Insulator extends wire 2.5 in. from wooden posts without losing energy through the post. This black electric fence insulator has a single-headed nail.

Fastens electrified wire to wooden posts without losing energy through the post
Extends the wire 2-1/2-inch from the wooden post
For 9 gauge through 22 gauge high-tensile steel wire and aluminum wire, all polywire (both regular and heavy duty), and polyrope up to 1/4-inch in diameter
25 insulators per bag