Solid tires for vehicle wheels; vehicle wheel tires; valves for vehicle tires; cycle tires; automobile tires; bicycle tires; casings for vehicle wheels; non-pneumatic wheels for vehicles; non-pneumatic wheels for automobiles; non-pneumatic wheels for motorcycles; non-pneumatic wheels for bicycles; non-pneumatic casters for carts; non-pneumatic casters for baby carriages; casters of electric carts; casters for wheelchairs; casters for electric wheelchairs