Product Description: 1. Premium Quality Material: Crafted from durable aluminum alloy with anodic oxidation treatment, this clamping square is resistant to rust and corrosion, ensuring long-lasting performance. Its high hardness guarantees permanent use without wear. 2. Precision 90-Degree Corners: This clamping square is expertly designed for attaching to boxes, frames, and more, providing perfect squaring while gluing. It features true right angles for both interior and exterior applications, with two extra notches for enhanced versatility. The base is engineered for straight lines and parallelism. 3. Easy to Use: Simply place the square in the corner of the two pieces you wish to align and secure it with pliers. It includes both metric and inch graduations for accurate calibration, making it user-friendly and safe for delicate cutting edges. Available in a convenient 12 cm size, sold in sets of two. 4. Professional Design: Ideal for use with boxes, photo frames, shelving units, and external corners, this tool ensures precise squaring during assembly. Its beveled edges make it easy to handle without risking damage to fragile materials. 5. Versatile Applications: Perfect for creating boxes, drawers, cabinets, picture frames, and furniture. Many carpenters find this tool invaluable for integrating into their jigs and fixtures. Experience satisfaction and efficiency with this essential tool for all your woodworking projects.