Exchange with what I was using before this item. Since it is immediately after replacing it, its durability is unknown but its feeling of use is good. Although I felt uncomfortable feeling while driving, I reduced the cheap ones by one year of use.
The ZERO Zero High Pressure Waitroller offers considerably improved fuel economy compared to other companies' rollers. For example, if it is a product of another company, if you give a speed of 60 kilometers, the tachometer is turning 6 thousand revolutions. If it is a product of zero, 72 kilometers will come out at the same 6 thousand revolutions. The current roller uses 13 g. 13 g is out of print, so I would like to revive again.