Overall Dimension of Wheel (Diameter x Width) is 150mm x 24mm / 5.9 x 0.94, Center Bearing internal diameter is 8mm / 0.3, and the length of Axle Screws is 75mm / 2.95. Please check detailed dimension on the third photo before purchasing. Package includes 2 x Grey Front Replacement Wheels and 2 x Axles, easy and convenient to install without complicated steps, saving effort and time. Made of high quality and environment-friendly rubber material, this set of solid replacement wheels is non-slip and dust proof with strong wear resistance and load bearing capacity. Wide application on disabled vehicles, healthcare vehicles, etc., compatible with most wheelchairs, rollators, walkers or other replacement accessories with 6 wheels. This set of front wheel replacement provides silent, smooth and light rolling over all surfaces, suitable for indoor and outdoor use, labor-saving, practical and long term to use. This set of 6 Inch Rubber Wheel Replacement fits wheelchairs, rollators and walkers, allowing easy and convenient replacement. Specification: Material: Solid Rubber, Color: Grey, Overall Dimension of Wheel (Diameter x Width): 150mm x 24mm / 5.9 x 0.94, Internal Diameter of Center Bearing: 8mm / 0.3, Distance Between Bearings on Both Sides: 40mm / 1.57, Length of Axle Screws: 75mm / 2.95, Total Weight: 700g. Package Includes: 2 x Grey 6 Inch Front Replacement Wheels, 2 x Axle Screws.