"This is the only spike I've seen that is galvanised and painted (usually one or the other). These spikes are ok for trellis and low fences. Don't use for high fences in windy areas, they will loosen in the soil! A small bonus is that the labels just peel off."
"Good solid fence post support with the advantage of having a bolt at the front to allow wood which has swollen/damp to be inserted without too much trouble. It can then be tightened like a clamp and hold firm, even allowing adjustment of the angle of the post if necessary."
"I bought these to try to avoid the hassle of trying to get a wooden post in dead square and with the thinner spike area it's a lot simpler. Information not given on the description is the length of the spike which is 600mm which should be good for up to 6ft posts. Good deep post socket as well so should keep a good grip."