15 cm. 300 lbs (136 kgs). New. Clamping force. Do more with Quick-Grip. Features. 1. New Quick-Change button easily converts clamp to spreader. 2. New removable, swivel jaws. 3. Removable non-marring pads. 4. Converts to spreader. 5. I-beam bar for added pressure and reduced bend and flex. 6. One-handed quick release trigger. 7. 300 lbs (136 kgs) of sustained clamping pressure. 8. 3-3/16 inches (81 mm) throat depth. Accessories also available from Irwin. Do more with Quick-Grip. Hold-Down Jig, Corner Clamp, Edge Clamp, and more! www.irwin.com. Made in China.