Workpro 6" Bar Clamps For Woodworking, Medium Duty 300Lbs One-Handed, 2Pc ?Solid Construction? A great, defined, rail construction makes sure the clamps do not slip and tighten very effectively when really putting the pressure on. (rated up to 300lbs) ?Quick-clamp? The quick-release latch makes it so easy to take them off your project or adjusts the fix in seconds. ?Non-marring Pads? Larger pads provide a larger area of thrust surface. More balanced force and parallel clamp. Non-marring, non-slip texture protects your project. ?2nd Usage - Spreader? The unique quick-change button design allows the F clamp to be a spreader as well. Just press the red button to take the jaw off and then reverse it before putting it back in, you will get the spreader you need ?Great Support?: World 2nd hand tool business for quality security. No hassle 90-day money-back and lifetime support. If you have any questions about the product, please contact us. We will reply to you as soon as possible within 24 hours. Thank you for your support