My Samsung Galaxy Note 4 is already not a small phone and fits of always struggled in the normal smartphone tripod holder and the Otterbox Defender makes it any easier. Here are these adjustable holders comes into play. The housing is made of plastic, the screw for adjusting the height itself is made of metal and the wheel is inside of metal with a plastic frame, this should therefore represent less of a problem, you do not is also so often on his smartphone, and it makes In addition, a useful impression. The bracket which clamps the smartphone is made of metal and is anchored by two springs in the housing. By design, exceptionally wide pulling out the possibility that the springs hooked but this can be resolved by some wag again. The tripod mount is made of metal and is embedded in the plastic, I would not spend too much force but it seems to be sufficiently stable.