I was hesitant to buy it at first, but I'm really happy with this product ㅎㅎ
There's a whirring sound from the pulley when it's running,
but after oiling it, it's quiet~~~~
When driving, only the tire noise is heard and there's no noise from the drive system,
so I feel at ease-~~~~ㅎㅎ
I just found out about this and tried it, and it's great ㅎㅎ
