This kit includes three base plates and three connector clamps, along with eight polyurethane wheels (four locking and four non-locking) to ensure mobility and stability in your setup. Our 3-in. wire rack wheels come with a 3/8-16 threaded nut, making them a versatile fit for various wire racks and shelving systems. Built from premium materials, these wheels are designed to endure daily use, promising long-lasting durability.