Choosing this set of 6 Inch Rubber Wheel Replacement for Wheelchairs, Rollators, Walkers and replace them easily and conveniently by yourself! Specification: Material: Solid Rubber Color: Black 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: 38mm / 1.49" Length of Axle Screws: 75mm / 2.95" Total Weight: 700g Package Includes: 2 x Black 6 Inch Front Replacement Wheels 2 x Axles Screws