Performance Tool W3982 8-Inch Deep Throat C-Clamp,

These clamps are well made and function as expected.

Bought it for an extra clamp. I've used it and it works good. Has good weight.

Great for clamping down work pieces

I got the 8" version and although it got the job done in forcing a sheet metal component to ride over the underlying aluminum frame to the point where the sheet metal's screw hole aligned with the thread in the frame, it struggled to remain stiff enough. So, in the last few turns of the screw, the jaw visibly widened, putting strain on the two corners of the "C" shape. I would prefer the designers to recognize that a deep clamp will need a LOT more beefing up at the corners if it is to hold the jaw separation constant while having the clamp tightened.

You can only get so much pressure before they start the bend. Mine do the job without breaking and they always returned back to the original configurations.

Searched long and hard for a deep throated clamp. Most are only 2 3/4 inches. This fit the bill. Solid build.

Wouldn't work for my need-nice product. Returned item and Amazon claims not returned.

Broke the first time I used it. Made with soft metal not cast.