General description Machined from solid aluminum alloy, this 90 Degree Positioning Block is a durable and high-tech woodworking tool designed to maintain perfect square angles. The anodized black surface treatment enhances its longevity, making it an essential tool for both professional and DIY woodworking projects. Technical specifications Material: Aluminum alloy Size: 14 cm (5.5 inches) Usage To use, simply place the square in the corner of the two pieces you need to square and secure with a set of clamps. This tool is ideal for clamping boxes, drawers, cabinets, frames, and furniture cabinets, ensuring precise assembly.