The BESSEY - SGL-18 is a Bar Clamp. This type of tool features a long rigid steel bar with a stationary head at one end and a movable head on the other end. The movable head can slide and be locked in place to apply pressure onto a workpiece. It is an essential tool for applications requiring firm pressure over an extended area, such as gluing, fastening, or machining operations in industrial settings. Key Features of the BESSEY - SGL-18 Bar Clamp: Bar Material: Made with a steel rail for sturdy and long-lasting usage.Dimensions: The bar of this clamp has a width of 1 1/16 in and thickness of 9/16 in, providing a substantial surface area for clamping.Clamping Force: The clamp provides a force of 1,800 lb when fully tightened, ensuring a secure hold.Clamping Capacity: With a jaw opening of up to 18 in, this product offers sufficient clamping breadth for large workpieces.Handle Material and Length: The steel handle measures 4 11/16 in, lending a firm grip during application.Swivel Pad and Type: The clamp includes a swivel pad that conforms to numerous project shapes. The swivel mechanism is replaceable for your convenience.Throat Depth: The clamp has a throat depth of 4 3/4 in, indicating how far the clamp can reach into the workpiece. Screw Size: This product features a 45/64 in screw size for adjusting the clamp.