Premium Material: Made of aluminum alloy, durable material, it can last for many years. Red anodized surface, durable and corrosion resistant, rust prevention. Professional Woodworking Tools: Designed to be attached to most types of boxes, picture frames to help with squaring during gluing. It can work with a clamping tool to check and position the corner for jointing and gluing wooden boards and can be used for woodworking and right angle welding. Practical tool to make your woodworking project easier. Easy to Use: The beveled edges are easy to handle and will not damage fragile cutting edges. Place the square in the corner of the two stock pieces you need to even out and secure with a set of clamps. This set of square and clamps can make your operation more convenient. Wide Application: Our 5.5 inch woodworking tools are used by professionals for making frames, repairing furniture cabinets and drawers, building cabinets and boxes, welding square pieces. Maintain a perfect square