Field Guardian Wood Post Nail-On Polyrope Insulator, Black

These are a great design. The other types become brittle in cold weather, or after a lot of UV exposure. These are a more supple plastic and because of their low profile they do not get bumped and snap off like othe insulators do.

These are pretty large. I am not sure where they are measuring the 3/8" diameter from but they are much larger than that. Aside from this they are pretty good quality. Just don't know if I will be able to use them because of the size.

Heavy duty. Great value and looks like they will hold up well to the elements

Perfect, just what I was looking for

The price is great and they seem to last as long, or longer, than the spendier ones.

Used on wood posts it fits better, but we used them on everything, including vinyl sleeves over T-posts

strong good design

Ordered 3 bags of these. Only one bag was what I ordered. The other 2 bags were completely different hangers. Not what I wanted but will try and make them work.