This 8” x 2.8-/2.50-4” Never-Flat wheel is suggested for the greatest possible protection for both loads and floors. This wheel is an excellent replacement tire for pneumatic or semi-pneumatic applications. This solid urethane tire has similar rollability features as a pneumatic tire, however, they never go flat. Performs similar to pneumatic wheels, but without the tumults of air pressure maintenance and flat tire repair. Never Flat wheels offers quiet, smooth operations, non-marking for superior floor protection, smoothes over obstacles with ease and absorbs shock to protect cargo.