Description:

Steerer Clamp Reverse 1 1/8" Black
The steerer clamp is a headset spacer with an additional clamping function, designed to go underneath your stem for double security.
Inner diameter 1 1/8" (Ø28.6), Assembly height: 10 mm, Weight: 13.8 g (+/- 5% weight tolerance), Material: Aluminium

Not only does this ensure that your headset holds well, it's ideal for working/travelling with your bike.
If you have the bike in the work stand, you can tighten the steerer clamp and it will hold everything in place when you loosen your stem and headset.
If you re removing/turning your bars for travelling, this will keep everything in place until you are ready to setup for the next ride.