Sign Holder Black Center stem bases is a balanced center design for stand alone displays. With the Modular Sign Holder Systems, you can mix and match components to meet your needs. All components are interchangeable to offer hundreds of sign solutions. Made with high impact styrene with miter-edge finish for easy fit of standard-sized signs. Light and durable for use with POP and store shelving applications. - Plastic; black - Length 5 1/2 in - Width 4 1/2 in - Sold per each