Complex sentence: The full-floating designs do not have c-clips, but can break axles, if the center portion (inside of the axle tube) breaks the wheel will not go anywhere since it is still bolted to the hub.
Split into simpler sentences: The full-floating designs, however, do not have c-clips, but can still break axles. If the axle shaft breaks, the wheel will not go anywhere since it is still bolted to the hub.