Precisely fitting tool for mounting the sprocket / spider on Bosch Active Line Gen3 (from 2018) / Active Line Plus / Performance CX Gen 4 (from 2020) / Brose / Yamaha PW-X / Giant-Syncdrive-Pro - engines.
Not for Active Line Gen2 until model year 2017 and Performance CX until model year 2019.
It is actuated with 24mm fork wrench or 1/2" ratchet.