This tool is specifically designed for the safe and efficient removal of crank arms from splined Hollowtech I and Octalink bottom bracket systems that do not feature a self-extracting mechanism. Key Features & Compatibility Designed for removing crank arms from: Hollowtech I splined bottom bracket systems Octalink bottom bracket systems Suitable for cranksets without self-extracting functionality Engineered for precise fit and secure removal Reduces risk of damage to crank arms and components Intended Use Specifically intended for use with Bosch motor systems Ideal for maintenance, servicing, and component replacement tasks Usage Guidance Ensure correct alignment before applying force Use appropriate tools and follow recommended procedures Avoid over-tightening to prevent component damage