The Bessey GSM30 12 in. Bar Clamp is the perfect tool for welding, assembly and general purpose clamping. It will help you get your job done quickly and efficiently. This heavy duty bar clamp features a classiX - heavy duty pad with swivel action for increased versatility. The tempered cold drawn forged steel bar offers a strong grip while the clamps open fully to a maximum of 12 in. Its 2 5/8" clamping surface width helps to ensure that it will not slip or move when in use. A 1 3/16" thick bar means this is a sturdy bar clamp that can handle just about any job you throw at it. When it comes to heavy duty work, you need tools like the BESSEY GSM30 12 in Bar Clamp that are up to the task.