The overall wheel size (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 axle screws is75mm/2.95.(Please check the detailed size in the third photo before your purchase!!)Choose the replacement kit for 6 inch rubber wheels for wheelchairs, rollators, rollators and replace them easily and conveniently yourself!Made of high quality and eco-friendly rubber, this solid replacement wheel set is anti-slip and dustproof with strong wear resistance and load capacity.Wide application on disabled vehicles, medical vehicles, etc., compatible with most wheelchairs, walkers, walkers or 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 durable