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 dimensions in the product images 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 environmentally 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-lasting. Ideal replacement for 6-inch wheelchair, rollator, and walker wheels. Easy and convenient to install by yourself. 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