very good spring support

The seatpost came well packaged and fast with me.
The installation proved very easy. The spring bias still increased slightly (90 kg). Old spring support out, built new, finished.
Incidentally, the spring was very well stocked with fat. Let's see how long it goes without noise.

When driving, I could not get out of the astonishment. What a difference from an ordinary spring support. Even on broken by tree roots Because cushions the Suntour sovereign. No hard bumps on the back.