What You Get: This 90 Degree Corner Clamp Clamping Square Set includes 12 pieces: four 3-inch clamps, four 4-inch clamps, and four 6-inch clamps, along with eight L clamps. Premium Material: Crafted from durable yet lightweight engineering ABS plastic, these positioning squares offer high impact resistance and superior strength, ensuring reliability for your projects. Effortless 90 Degree Angle Clamping: Quickly and securely hold your work pieces at a precise 90-degree angle. The non-damaging plastic components protect the surface of your materials during use. Easy to Use: Simply position the 90-degree square at the corner of your work piece and fasten it with the included L clamps for secure alignment. Versatile Applications: Ideal for assembling boxes, drawers, cabinets, frames, and furniture. The various sizes make it suitable for both small and large projects, providing flexible solutions for your woodworking needs.