These are budget fence insulators to attach wire and polywire to wooden fenceposts when creating an electric fence. They come with the plastic insulator insert open and the staples seperate.

Simply fold the wire or polytwine into the plastic insert, hold against the fencepost and hammer the staple onto the post to secure the insulator.

As the hole is only 2-3mm in diameter, these are not suitable for rope and are best used on short to medium electric fences with small to medium energiser units.