Material: Our clamping square kits are made of aluminum alloy and stainless steel, and the surface is anodized, which is corrosion-resistant, wear-resistant, and does not fade 8 Hole Opening Design: Enough to meet the daily use of woodworkers, it will not cause the structural strength of the product to decrease due to too many openings, and prevent the product from being deformed Professional Woodworking Tools: Precise 90° right angle, error is only ±0.05°, strict production process and quality control. Professionally used to make drawers, cabinets, frames, furniture cabinets, etc.Double-sided precision laser engraving, the scale is accurate and does not fade, one side is inches and one side is centimeters, can be used for measuring as a ruler Wide Application: This 5.5"*5.5" FivePears woodpecker tool is designed to clip onto most types of boxes to help level out during the gluing process. Can be used in conjunction with jigs to inspect and locate the seams of planks, and to glue or weld at right angles.Works better than the carson clamp No Risk: A right angle jig is a very practical tool that can make your woodworking projects easier. If you have any questions about the product, please contact us. Your issue will be resolved within 24 hours Made of high-quality aluminum alloy, it can be used for many years. Anodized red finish for durability, corrosion and rust resistance. There are different fixing holes to make your work more convenient. Our corner clamps are essential to ensuring a balanced project outcome. The pearl cotton lining protects the positioning block from being bumped. Designed to clip onto boxes, picture frames, shelving cabinets, 90 degree welds and outside corners.