Introducing the topeak whitelite cap clip if you are working on bikes over night at cycling events working on your own bike at night or even other activities such as fishing the a light lite cap clip can be your saviour the whitelite cap clip allows you to mount a light to the peak of your hat which in turn enables you to analyse the bike or even tying a fishing knot when its pitch black the whitelite cap clip is only compatible with the whitelite hp 1w and the whitelite focus lights