Irwin is upgrading their XP Quick-Grip line that we first covered in 2006. Now they describe the clamps as one-handed bar clamps. The clamps feature the same Power Locks to hold pressure longer and an I-beam bar to resist twisting and bowing, but Irwin increased the rated clamping pressure to 600 pounds and added double-locking swivel jaws with removable face pads.
Like all Irwin’s other Quick-Grip clamps, you can convert the XP600’s to spreaders with the quick-change screw. Although the spreaders need a minimum opening of 9-1/8″ to work, Irwin did increase the throat depth to 3-3/4″.
It looks like Irwin will make the Quick-Grip XP600 in 6″, 12″, 18″, 24″, 36″, and 50″ lengths. We haven’t found anyplace selling these updated clamps yet. If you’ve seen ’em sold anywhere, let us know in the comments.
Quick-Grip XP600 [Irwin]