These are the exact size and model my childs Felt F24X requires. ETRO 32-507 is the size, It is important when you are dealing with 24" wheels to check the ETRO as there are also ##-540 size tires.
The buying experience from biketiresdirect was great and they arrived fast!
The tires delivered were too small even though they were labeled as 24 inch. They actually measure at 23 inches.