This allen wrench is so handy, I carry it on a small carbineer at all times. When I need to adjust something, it is right there. I have used both ends and they fit perfectly. The ring give you a good hold when tightening or loosening anything on most ProMediaGear.com products. This is great to have with you when photographing, J. Payne Charlotte NC.
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Reviewed by: James W Payne from Charlotte, NC.