Jorgensen 38012 Gear Clamp Bar Clamp, 12-Inch This new rugged bar clamp is a 12" Jorgensen Gear Clamp This distinctive design allows for rapid action clamping With a quick push on the "power bar", the gear clamp develops up to 600 lbs. Maximum opening capacity is 12 inches Maximum reach is 3 inches from edge of bar to center line of screw Maximum load limit is 600 pounds Ideal for do it your selfers, hobbyist, carpenters, cabinet makers, woodworkers, metalworkers and professional trades people of all types Ideal for rapid action clamping