The overall dimension of the wheel (diameter x width) is 150mm x 24mm / 5.9 x 0.94, the inner diameter of the center bearing is 8mm / 0.3, and the length of the screws is d axle is 75mm / 2.95. (Please check the detailed dimensions on the third picture before purchasing ) Package includes 2 gray front spare wheels, 2x axles, easy and convenient to install without complicated steps, saving your efforts and your time. Made of high quality and eco-friendly rubber material, this set of solid replacement wheels is anti-slip and dust-proof with strong wear resistance and durability. load capacity. Wide application on handicapped vehicles, health care vehicles, etc., compatible with most wheelchairs, walkers, walkers or other replacement accessories with 6 wheels. This front wheel replacement set will provide a quiet, smooth and light ride on all surfaces, suitable for indoor and outdoor use, economical, practical and long term to use Choose z this 6 inch rubber wheel replacement set for wheelchairs, rollators, walkers and replace them easily and conveniently on your own Specification: Material: Solid Rubber Color: Gr ey Overall Wheel Dimension ( diameter x width): 150mm x 24mm / 5.9 x 0.94 Center bearing internal diameter: 8mm / 0.3 Distance between the bearings of the two sides: 40mm / 1.57 Axle bolt length: 75mm / 2.95 Total weight: 700g Package includes: 2 x 6 inch black front spare wheels2 x axle screws