What You Get: Set include 6pcs 90 degree positioning squares, each for 2pcs, they are bright orange color. Their length is 3"/80mm, 4"/100mm, 6"/150mm. Used for create perfectly square boxes, drawers, cabinets, frames, furniture cabinets, etc. Durable Material: These positioning squares are made of high-impact plastic construction that insures optimal durability and lightweight usability. Which makes the positioning squares easy to clamp and strong enough to not flex. Perfect 90 Corners: The simple and easy to use square 90 will become your third hand while assembling cabinets, drawers, boxes or any project that requires a 90 degree corner. It can be used on a standard 90, a t-joint, outside 90 degree, all four corners and more. Easy to Use: Both the inside and outside edges of these positioning squares tools can serve as exacting measuring guides. Embossed gradation (in inches and millimeters) are molded into the squares to provide convenient measuring guidance. Application: Perfect for all the woodworking carpenters out there no matter whether you are making a picture frame or repairing, building a cabinet or repairing a drawer, building a box or welding a square piece. Our clamping squares are just a good helper to get that job done right.