Irwin Quick-Grip T512QCEL7 Quick Change Bar Clamp 300mm / 12 Inch The T512QCEL7 features a quick change system which converts clamp to spreader in seconds. This now provides the consumer with a greater clamping hold load of 135kg. It also includes a new to the market lockable swivel feature which enables uneven surfaces to be clamped Features: Swivel jaw with lock for clamping uneven surfaces (patent pending) Square XP-style protective pads protect the work surface Heavy-duty construction which makes for a durable, long lasting clamp Improved quick-change screw mechanism allows for easy conversion to a spreader Specification: Clamping Capacity 300mm (12 in) Spreading Capacity 515mm (20 in) Net weight: 0.918kg