Minoura LH-50 Besso

Light holder for suspension fork.
It's a good idea to mount a head light on the stanchion tube of suspension fork if you need a light but you don't wish the have it on handlebar and your bike is equipped with suspension fork.
Stainless band clip for Besso is the specially longer one. It accepts up to 38mm (1-3/8") diameter so it fits most suspension forks.
A similar device to have a room for light is available in the market. It's installed on the front axle instead of acorn nut.