The Campagnolo sprocket extractor from the SUPER B brand is the perfect tool to remove the sprocket from your road and gravel bikes with transmissions from the Record, Chorus, Athena and Centaur series. With its easy use and its 21mm or 14282 key, you can remove the sprocket in a matter of minutes. In addition, its lightness of 2.5kg facilitates installation. RECOMMENDED USE: ROAD GRAVEL