General description The Bicycle Bottom Bracket Removal Tool is a practical and essential tool for any bicycle repair enthusiast. Designed for 20 tooth splined bottom brackets, this tool is made from high-quality carbon steel, ensuring durability and resistance to rust and corrosion. Technical specifications Material: High-quality carbon steel Length: 5 cm Top diameter: 2.3 cm Base diameter: 2.4 cm Square hole diameter: 1.33 cm Installation To install, first remove the bike crank puller. Then, use the bike crank removal tool to remove the crank by tightening it clockwise. Usage This tool is ideal for a variety of users, including: Families Bicycle enthusiasts Bicycle shops