Black. Variable. Reducer for 10/12 mm hole and adjustment tool included.
Please note that this is a real shock absorber so the spring is slightly softer than more simple models.
Mounting brackets
Upper: diameter 33mm, width 20,2 mm
Lower: diameter 28 mm, width 20,5 mm
Please note that the picture shows the 280 mm variant. Please note that it is the spring tension that is adjustable. Not the length.