Features: The IRWIN QUICK-GRIP Heavy-Duty One Handed Bar Clamp evenly distributes up to 600lbs of sustained clamping pressure is one of the top performance One-Handed Bar clamps available Ideal for heavy-duty applications such as installation, demolition and rough glue-up Dual removable swivel jaws and non-marring, full-faced pads for even distribution of clamping force Pads can be removed for full contact of the swivel jaws to combat flexing at extreme pressure and to conform to irregular shapes New grip design and Quick-Release trigger provide simple, one-handed operation Item # Description Spread Capacity Throat Capacity 1964711 6" (15 cm) HD Bar Clamp/Spreader 9-1/4"-14-7/8" (235 mm-378 mm) 3-5/8" (92 mm) 1964712 12" (30 cm) HD Bar Clamp/Spreader 9-1/4"-20-7/8" (235 mm- 530 mm) 3-5/8" (92 mm) 1964713 18" (45 cm) HD Bar Clamp/Spreader 9-1/4"-26-7/8" (235 mm- 6783 mm) 3-5/8" (92 mm) 1964714 24" (60 cm) HD Bar Clamp/Spreader 9-1/4"-32-7/8" (235 mm- 835 mm) 3-5/8" (92 mm) 1964715 36" (91 cm) HD Bar Clamp/Spreader 9-1/4"-44-7/8" (235 mm- 1140 mm) 3-5/8" (92 mm) 1964716 50" (127 cm) HD Bar Clamp/Spreader 9-1/4"-58-7/8" (235 mm- 1496 mm) 3-5/8" (92 mm) * All Pictures Shown Are For Illustration Purpose Only. Actual Product May Vary Due To Product Enhancement.