There are Ex. At the spider always the problem that large items (eg duvet cover) are pushed together by the wind and then hang on a leash in the tangle. This does not happen with these brackets because this keeps the laundry very good grip on the spot. The wonderful thing about this is that the laundry does not get by massive pressure point, as is common with other brackets. The reason is that the surface which holds the laundry, is gummed. Therefore, these brackets are also available for finer laundry for me definitely the first choice.
Despite the relatively high price, I can say here is an absolute buy recommendation.
UPDATE 03/30/2015:
Still these clips are my "favorites". Even after more than 4 years use has not a single clip broke. I have now to buy another 2 packages and given away my old clips. - Super thing and continues to be a real buy recommendation.