This 6” x 2” wheel is compatible with Stryker's 3002 Secure II Med-Surg Bed, 3000 Secure Bed, LD04 Birthing Bed, FL17E GoBed, 5050 Stretcher, 816 Prime Big Wheel Stretcher, 717 Prime Big Wheel Stretchers & more. The non-marking polyurethane tread provides excellent floor protection while giving the bed or stretcher a smooth & quiet ride. The crowned shape tread helps the wheel pivot with ease. Each wheel is equipped with two precision ball bearings to assist with moving your bed or stretcher. This wheel has a Diameter of 6 inches & a tread width of 2 inches. It has a hub length of 2-1/2 inches & an inside diameter of 7/16 of an inch (accepts a 7/16 axle). If you have any question or need further assistance, contact Mapp Caster.