So I now have often reconstructed Battery Grips for various cameras (5D II, 6d, 60d, 550d) purchased and must say that this is the place of the hitherto highest quality. Nothing wobbles, it all fits very well and the batteries are immediately recognized correctly, whatever was the problem with many other manufacturers. The indentation for the thumb is very handy. Can only recommend the battery grip! Plus 2 batteries which are also equally recognized by the 70d. Class, I'm thrilled!