We’re not exactly sure what advantage the split-head design on Jet’s Double Header C-clamp gives, but it definitely looks different than most C-clamps. Instead of two clamping points, the Double Header gives you three points, presumably to spread around the tool’s 1,500 pounds of clamping force.
The Double Header comes with non-marring pads on each split head, to minimize damage to your workpiece. Jet designed these clamps with a maximum capacity of 4″ and a throat depth of 2-1/8″.
So far, we can only find ’em at Amazon. There you’ll pay about $40 for a six-pack.