Abus Bosch Pt2 Cordless frame battery (downtube) Suitable for e-bikes with Bosch drive and a battery (Downtube-Akku) assembled on the lower tube) Incl. 1 key With the ABUS lock system you can operate all locks with the same key. To do this, simply specify the key number when ordering your other locks and/or keys. So you can easily reduce your key collection