1、Anticorrosion And Durable: The clamping square is made of reliable aluminium alloy and stainless steel clamps, which are graduated, rust proof, corrosion proof and durable. 2、Solid Positioning: This right angle clamp allows the use of a clamping tool to check and position the corners of a board joint for gluing or welding at right angles. 3、Convenient Operation: This right angle clamp will not damage delicate cutting edges. Simply place the square in the corner of the two parts to be squared and secure with a set of clamps. 4、Professional Tool: This positioning square is clearly graduated and accurately proportioned to help you assemble square right angle frames very effectively, making your woodworking projects faster. 5、Wide Application: The right angle clamp is specially used for making household cabinets, drawers, photo frames, boxes, etc.