The Campagnolo part HB-SH100 is the service kit for USB bearings using in Campagnolo Shamal or Fulcrum Racing Zero wheels up until 2015.
The fulcrum part number is different but the service kit is identical. In fact they will fit any campagnlo/fulcrum hub from 1999 onward that uses the 17mm oversized alloy axle and the "cup and cone bearings". That is Campagnolo high end wheels Zonda or Racing 3 upwards. The USB service kit uses Cermaic balls bearing but the standard steel cones and races.
It will not fit 2015 model year onwards Fulcrum Zero and Shamal (Campagnolo Bora uses service kit HB-BO100 for CULT bearings) front wheels with 14mm front hub axles. These use a different set of parts.
You can upgrade wheels or hubs that came with the standard steel cup and cone bearings but if you had the USB bearing this kit is the proper replacement.
You get bearing cups, ceramic bearings (caged), cones and seals. There tools to remove the press the bearing cups into the hub. If you require these please enquire.
This service kit fits front or rear hub/wheels and the kit contains parts to service one hub/wheel only