The metal peg board is actually quite heavy, so it feels like it will last a while. The clamp part (other than the knob) is also metal. The rectangular and cup container and the "phone" frame are plastic. The other parts are also metal-based.

As advertised. Very sturdy and useful.

Set up was quick. Does what it is supposed to. Wish you could buy additional panels without accessories at reduced price.

Though these are marketed as an accessory for the desk pegboard, they are amazing as fridge magnets since they are so easy to adjust.

Extremely sturdy and can support a lot, even a heavy textbook.

These work great as headphone hangers!