Wheelchair Wheels 12 Inch (30cm) Manual Rear Casters with Bearings Universal Wheelchair Replacement Wheel Accessories * Durable PU solid wheelchair caster replacement parts are compatible with most manual wheelchairs on the market. * Heavy-duty, wear-resistant, smooth and quiet. * Most suitable for the rear wheels of most manual wheelchairs. * Bearings are used in all joints and have the largest load carrying capacity and long service life. * Comes with screws, easy to install and remove. specification: * Size: 12 inches (30cm) * Wheel thickness: 4.6cm * Material: PU * Shaft hole 1.2cm * Shoulder width: 5.5 cm * Packing: 2x wheelchair rear wheels Note: * Due to the measurement, please allow a size difference of 1-2 cm (0.4-0.8 inches). Thank you!