Premium Material:Our clamping square kit is made of high-quality aluminum alloy and stainless steel fixtures, ensuring accuracy at a 90 degree angle. Red anodized surface, rust resistant and corrosion-resistant. CNC machine tools will last for several Professional Woodworking Square Tools:The corner clamp used for woodworking tools has two measurement units, metric and imperial. It is laser engraved with a scale on the front of the product. The measurement length is accurate and easy to read Upgraded Extended Screw:The extended 5.1-inch screw is designed to clamp onto most types of wooden boxes to assist in leveling during the bonding process. It can be used with clamps to check and position the joints of the wood panels, and glue or weld at right angles.Right angle clamps are a very practical tool that can make your woodworking project simpler Easy to Use:Simply place the 90 degree positioning square in the corner of the part and secure it with a set of wooden clips. It is easy to use, and the woodpecker tool has beveled edges that do not damage the fragile cutting edge and can form a perfect 90 degree angle. It's as simple as having an extra hand, greatly improving your ability to create a true 90 degree angle Wide Application:This 5.5" x 5.5" carpentry right angle jig set is professionally used to assemble boxes, drawers, cabinets, frames, furniture cabinets, etc. At the same time, this clamping square for woodworking has precise square scale and can be used as a ruler. Perfect for squaring up shelf cabinets and keep a square while assembling frames, cabinets, or just about any box