This set includes 4 pieces of 90-degree positioning brackets, designed as an L-shaped angle support tool for frames and boxes. Made from sturdy materials, these brackets provide a reliable right-angle reference for woodworking, DIY projects, and professional assembly. They help solve common alignment issues during gluing and construction, ensuring accurate and secure joins. Each bracket features clearly marked 45-degree and 22.5-degree scales near the center for convenient angle measurement and marking. The tool can also serve as a right-angle mold to quickly produce frames, right-angle components, and other parts with consistent precision. Suitable for both hobbyists and professionals, it simplifies projects requiring exact angles and secure assembly. Key features include: - Durable construction with clear calibration for long-term reliability - Ergonomic design for comfortable handling - Multi-purpose use for assembling boxes, drawers, frames, furniture, cabinets, and more - Dual angle scales (45° and 22.5°) for easy measurement - Functions as a right-angle mold for creating precise parts