Because I had not changed it for a long since I changed it before.
Exchange with sprockets at the same time.
Blurring and coslering sound disappears during gear change of drive system
It is comfortable.
I bought it because the chain I was using was stretched. It is made of safe DID, so we are looking for durability. I used a clip joint, so I worked very easily. Also, I'm happy to exchange this price comfortably. Giving greed, I think if there is an inexpensive chain cutter for 428 sizes.