Features: Package included 4 * 4 inch positioning squares, perfect woodworking assistant. Made of high quality plastic, which ensures excellent durability and lightweight. With 45 degrees and 22.5 degrees multiple angle calibration, more convenient to use. Embossed gradation on both inside and outside edges of each square, highly defined scales not prone to wear. Square up perfect corners in your woodworking projects, ideal for gluing and assembling your boxes, drawers, cabinets, etc..