The Fi-Shock Small Screw-In Insulators are made from porcelain and are designed for wooden posts. They can be used with steel wire, aluminum wire, polyrope, and polywire. They come in a durable, white porcelain and have a lifetime guarantee.
Small screw-in insulator for wooden posts
Can be used with steel wire, aluminum wire, polyearope and polywire (not recommended for polytape)
Comes in white color porcelain