Irwin 18" Quick-Grip Catalog DIY/Homeowner Tools & Hardware Irwin 18" Quick-Grip Manufacturer : Irwin Industrial Tool Co SKU : 3171923 Description The IRWIN® QUICK-GRIP® Medium-Duty One-Handed Bar Clamp evenly distributes up to 300 lbs. of sustained clamping force I-beam bar to reduce flexing and bowing New grip design and Quick-Release⢠trigger provide simple, one-handed operation Rates Please contact us for current pricing and availability.