Addendum 09.01.2015: The Magic Arm is now after six repeated use final scrap. If you want to find it you have to turn so tightly that one to a locking bolt inwards pulls which of course has the consequence that there are two parts in hand. But I also subtract the second star, even the cheapest arm should hold more than six uses. Today the already mentioned above arm of Tarion has also come (three days ago ordered), this currently costs about 15 to 19 (depending on whether it is left to send from Germany or China) and the works actually awarded, so do not put your pair Euro invest more and which have reasonable;)
By the way, I thought that all China Magic Arms are the same and are only sold under different names. That is in the "low grip section" so often, for example, with Rods for rigs or so. For Example But the Tarion and the Andoer Magic Arm are indeed the same structure, but made different, so is the Andoer surface smoothness and the Tarion matt, the locking screw is a slightly different or the accessory shoe is ribbed at Tarion and the Andoer (counter product photo ) rasterized.
Yours sincerely
Moder Master