The Falk 130660 Steelflex Coupling Hub is a silver steel component with dimensions of 5-3/8″ width and 3-1/2″ height. It is designed for use with Falk brand systems and is made of high-quality steel. This unit is a single piece and is part of the Steelflex Coupling type. Its compact size and durable construction make it a reliable choice for various industrial applications requiring precise measurements and secure connections.