Bessey 4" Light Duty U-Style Bar Clamp. With its quality steel drawn rail in a single piece, this clamp ensures durability and strength. The sliding arm made of die cast zinc is light, stable, and break resistant, providing long-lasting performance. The U-shaped rail enables step over clamping, making it ideal for those hard to reach spaces. Plastic pressure caps on the top and bottom sections protect the work piece surface, preventing any damage. With a 4" clamping capacity, 2" throat depth, and 330 lb. clamping force, this clamp is capable of handling a wide range of projects. Whether you're a professional or a DIY enthusiast, the Bessey 4" Light Duty U-Style Bar Clamp is a must-have tool for your toolbox.