What You Get: Set includes 6 pieces 90 degree positioning brackets, each for 2 pieces, light orange color. Their length is 3" or 80mm, 4" or 100mm, 6" or 150mm. Used for perfectly square box, drawer, cabinet, frame, furniture cabinet, etc. Durable material: These positioning brackets are made of high-impact plastic, which guarantees optimal durability and easy handling. This makes the positioning brackets easy to clamp and strong enough not to bend. PERFECT 90 CORNERS: The simple and easy-to-use square 90 will be your third hand while designing cabinets, drawers, boxes or any project that calls for a 90 degree corner. It can be used on a standard 90, a T-joint, outside 90 degrees, all four cornersand more. Easy to Use: Both the inside and outside edges of these positioning square tools can serve as accurate measuring guides. Embossed gradations (in inches and millimeters) are cast into the squares for convenient measurement guidance. APPLICATION: Perfect for all the woodworking jobs out there, whether you're making a picture frame, or building a cabinet, or repairing a drawer, repairing a box, or welding a square piece. Our clamp angles are just a good helper to do this job properly.