This extremely sturdy original BESSEY one-handed ratcheting clamp EZ is perfect for all work that needs to be carried out with one hand - overhead tasks, or if the other hand is needed for aligning purposes. Clamping force up to 445 lbs. Converts to spreader without tools. Intelligent release mechanism in upper section Ergonomic 2-component plastic handle behind the rail. Soft pressure caps provide material protection and secure clamping.