Designed to hold material up to 3 inches thick at a 90-degree angle. Composite plastic body and steel screws. Holds up to 200 pounds of pressure. IRWIN Tools QUICK-GRIP 90-Degree Angle Clamp (226410)The Irwin Quick-Grip 90-Degree Angle Clamp is designed for holding larger corner items and crown molding up to 3 inches thick. It holds up to 200 pounds of pressure and is made from a composite plastic body and steel screws. Irwin backs this clamp with a lifetime warranty.The IRWIN 226410 90-Degree Angle Clamp is great for holding larger corner items and crown molding. The angle clamp is composed of composite plastic body with steel screws and can hold up to 200-Pounds of pressure.