The IRWIN Quick-Grip Quick Change Bar Clamps have the following features:
A quick change system which converts clamp to spreader in seconds, with a clamping hold load of 135Kg.
A lockable swivel jaw feature which enables uneven surfaces to be clamped.
Square XP-style protective pads for protecting 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.
The Q-G536QC 536QCEL7 has the following specifications:
Clamping Capacity 900mm (36 inch)
Spreading Capacity 1100mm (43 1/3 inch)