BESSEY Horizontal Automatic Clamp increases productivity and safety in the workplace, adding value to any operation. The built-in pressure screw allows you to adjust the clamping force over a pressure range of 25 to 550 lbs. It automatically adjusts to changes in workpiece height while maintaining clamping force. The steel pressure pads have a removable plastic cap that won't leave scratches. Strong, hardened metal plates maintain long life, and the soft grip handle provides comfort and ease of use. The hole pattern on the baseplate is designed to facilitate quick and secure installation of the clamp for metric and inch sizes. Ideal for shop or small batch production work with workpieces of varying thicknesses.