Used to craft a table saw attachment. For the price they are sturdy and do their job well. The clamp is used to clamp objects at the level of their base or slightly below. So when I'm trying to hold a 3/4" thick sheet of wood I mostly have to raise the mug to about the same height. Overall very durable for general use. I've got it for a home workshop and I've used it even for occasional use well cropped.