The clamp works well. It appears to be well made, using a light metal (will not guess what metal). It is easy to fit, and works well with my Canon A560; although it will take some practice before I get any good shots - not the mounts fault. However there is some missing information that would be useful to purchasers. These are:
The adaptor will attach to a tube of diameter 28-45mm (quoted by manufacturer)
The Camera platform can be adjusted in two direction (as per my measurements)
Vertically up to 95mm from the mount centre
Horizontally 50mm either size of the mount centre and the camera fixing screw
The last measurement is the size of camera that can be used. When the camera lens is fully out, I would suggest that it should be no more than 50mm from the front of the lens and the screw mount point. Also when first used, I would put the adaptor on to the telescope first, turn on the camera, then mount it on the adaptor. The risk is otherwise is that the camera lens will hit the eye piece when it is turned on.