IRWIN QUICK-GRIP® Quick-ChangeMedium-Duty Bar Clamps can be converted from a clamp to a spreader in seconds, with a clamping hold load of 136kg. The lockable swivel jaw enables uneven surfaces to be clamped and it is fitted with square XP-style protective pads to protect the work surface from damage. Enhance your clamps with a wide range of QUICK-GRIP® Clamp Accessories.This IRWIN QUICK-GRIP® Quick-ChangeMedium-Duty Bar Clamp has the following specification: Clamping Capacity: 300mm (12in)Spreading Capacity: 515mm (20in)Clamping Force: 136kgPack Quantity: 2Additional Information:Capacity (mm): 300Clamping Force (kg): 136Max. Spreading Capacity (mm): 515