With its simple and efficient 1-handed operation, you will have no trouble using this product. With an impressive clamping force of up to 100 lbs on both 6 inch and 12 inch clamps, you'll be able to secure even the toughest projects. Plus, with two clamps included in each size - 4.5 inches, 6 inches, and 12 inches - you'll have everything you need to tackle any job with ease.