Rollator Walker Replacement 6 inch Rear Wheel,Rollator Rear Wheel Assembly,6 inch Solid Wheel, 6" 3 Rib Caster Wheel,rollator Walker Accessories,Universal Parts,MDS86825SLRW,Set of 2,Black.1. You will receive a pair(2Pcs) of 6 inch Rollator Rear Wheel Assembly, including bearings (excluding axle) and dust cover, wheel outer diameter 6Inch, bearing hole 8MM. Black. 2. Easy to install, just remove the old caster and replace it directly. You can use your existing wheel axle for installation. 3. This 6 inch Rollator Rear Wheel Assembly is compatible with most med line 6 inch wheel Rollators. The size is consistent with the part number