This 19mm bench clamp is suitable for woodworking tables with stable and secure clamping. It is versatile and can be used with various angle rulers. When using a triangular ruler for angle marking, select the desired angle to clamp, secure, and mark with a pen. The square ruler is ideal for stair guides, and two clamps can be used to secure it and mark with a pen. The ruler allows for marking lines at fixed distances. Simply choose the desired length to clamp, secure, and mark with a pen. It can also clamp table saws and other tools for stability and support. You will receive a package containing 2 bench clamps. If the distance between the bottoms is too short, the double heads can be interchanged and clamped upside down. Use two clamps for additional support and ensure vertical alignment. This bench clamp is stable and firm when clamping. It is made of aluminum alloy material, which is compatible with various woodworking tables and can be used with a variety of angle rulers. Wide Application: This bench clamp has a wide application. When the triangular ruler is used for angle marking, it can be clamped and fixed at the desired angle. Stable and Firm: The workbench stopper auxiliary tool provides stable and firm clamping. It can secure table saws and other tools to use as a backer. Product Name: Bench Clamp Set Size: 19mm / 0.75inch Measuring range: 0-7mm Color: Red Material: Aluminum Alloy Package Contents: 1 set x dog hole clamp Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3cm.