If youAAAve chosen to equip your bike with CampagnoloAAAs EPS drivetrain, the Non-Standard Battery Unit Holder allows you to mount the battery pack under the saddle or on the chainstay. Depending on where you decide to mount it, youAAAll need either the EPS BB cable kit or EPS Seat Cable Kit. The Campagnolo EPS Non-Standard Power Unit Holder includes all the hardware needed to to mount the battery. Product FeaturesMaterial: plasticSpeeds: Cage Length: Maximum Front Difference: Pull Type: Capacity: Compatible Components: Weight: Recommended Use: cyclingManufacturer Warranty: