I have just installed the 40M 4 arm Top-spinner Dryer using the heavy duty, very stout ground spike included. First impressions are that it is a very solid and well built product. The spike is similarly so, though many will find it difficult to drive into their lawn. This task is very much easier in wet winter ground and of course a fairly large hammer and old piece of fence post to protect the top are essential aids. One disappointing feature however is that Brabantia's claim to easily spin is rather a hollow claim. The design is such that the arms rotate against the green catch upon which the dryer rests when raised up and clicks into position. Even without loading with washing, the friction is such that the whole post rotates in the ground socket! The rotating feature it seem is more down to accident than design!