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I purchased a Busch & Müller lighting LED headlamps Ixon, but the attached bracket was not suitable for my arm, which is why I also bought the battery Lamp Holder. As little Practiced in the craft I had some trouble to attach the holder. After that, however, I liked it very much, because he seemingly firmly and securely holds the lamp. To complain about this, but there is that to the lamp holder that has to be purchased, if you have a mountain bike with thick frames. In addition, the purchase price of the holder was lower than the postage. In my opinion you could send the holder together with the lamp.