Chrome/black. Adjustable in several steps. Reduction for 10/12 mm holes top and bottom is included, but is not shown in the picture.
Note that this is a real shock absorber so the spring is slightly softer than simpler models.
Brackets:
Top, diameter 33mm, width, 20.2 mm
Bottom 28 mm, width 20.5 mm
Note that it is the spring preload that is adjustable, not the length.