I bought 3 pkgs (4 clamps per pkg) of Bessey clamps at HD when they were on sale. One of the clamps failed to hold when tightened so I called Bessey to see if there wasn't something I could do to fix it. Their response was "There isn't anything you could do but it's a manufacturing defect so we'll send you a new one".
How's that for customer service!!!!!!
Jim