The Bosch crank arm puller tool is a must have for anyone wanting to do maintenance to their Bosch equipped electric bicycle.
Simply insert the tool into the threaded ISIS spindle and the tool will easily pull off the crank arm safely and damage free. Works with all Bosch ebike drive systems.
The Bosch crank arm puller tool is specifically designed and manufactured by Park Tool to remove crank arms from splined ISIS Drive bottom bracket spindles that do not use a self-extracting system.
The finely machined threads provide leverage to remove tight crank arms and a strong rotating tip ensures long life and smooth extraction.
NOTE: Never attempt to pull off your crank arm on a Bosch equipped drive system as damage will occur if you do not use a tool like the Bosch crank arm puller tool.