I bought this item to mount a Cyberdyne ambient temperature gauge inside my Xterra. I needed something that was adaptable since I wasn't sure where I would end up mounting it.Other reviewers have said this is plastic. It's not. The base is a solid piece of steel and the screws attach the clamp securely to the base, holding it in the desired position without much chance of slipping. It has a fairly wide range of swivel around the axle, so as to obtain the desired angle of viewing.The housing is also a good quality steel. It has a fairly large hole at the back with a rubber grommet for feeding the wires through. There is also a long, wide slot from that hole along one side to the front, so the clamp can get a good grip on the meter.I'm very pleased with this unit. But then, I prefer function over form.