The IRWIN® QUICK-GRIP® SL300 One-Handed Bar Clamp provides up to 300 lbs. of sustained clamping force that is evenly distributed through locking swivel jaws. It is constructed with an I-beam bar to reduce flexing and bowing, and has a unique pistol grip design and quick-release trigger for onehanded operation. This clamp easily converts to a spreader with a few simple turns of a Quick-Change™ screw.