Although this product will be purchased a second time, there is a difficulty in durability.
Quality is not good whether the date of manufacture is old or whether storage is bad.
However, I purchased 6PK 2680 without size.
The color of rubber was quite different between the part exposed from the box and the part not so.
Is it an article that was kept as inventory for a considerable period such as 5 years or 10 years?
I used to stop completing the repair, but it is a difficult situation to explain to the user.