1. The diameter of the air nozzle 70 of the scooter is larger, and the time for inflating the tire is shorter, thus improving the structural integrity of the rim. It takes longer to inflate the tire because the extra step is to unscrew the valve stem. Therefore, the scooter valve 70 is good.
2. The air nozzle 70 of the scooter can be inflated only by removing the dust cap. 60 is shorter and thicker than 70, and the rim needs more holes. So the valve 70 of the scooter is good.