Premium Material: Made of aluminum alloy, durable material, it can last for many years. Anodized red surface, durable and corrosion resistant, rust prevention. Professional woodworking tools: designed to attach 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 joining and gluing wooden boards and can be used for woodworking and right angle welding. Handy tool to make your woodworking project easier. Easy to use: 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 level and secure with a set of pliers. This set of square and clamps can make your operation more convenient. Wide application: Our 5.5 inch woodworking tools are used by professionals to make frames, repair cabinets and drawers of furniture, building cabinets and boxes, welding square pieces. Maintain a perfect square when assembling frames, cabinets or just about any box. Unique packaging: We use the top and bottom overlap method and use internal support to separate each accessory engaged to take up your smallest space to store the product.Reminder: When you feel the quantity of items is incorrect, please remove all items from the box. Other accessories can be below. Two measuring scales We have two measuring scales (incher scale and millimeter scale), which are easy to use and can meet to your daily needs Screw fixing hole Multiple screw fixing holes can be fixed to the desired length. Adjustment thickness Suitable for all kinds of wood with a thickness less than 3.5 cm.