- Reliable strength: The bottom bracket auxiliary tool uses a 304 stainless steel hardening process, delivering high durability and wear resistance for long-term use. It will not easily deform or suffer damage. - Labour-saving design: Its geometry simplifies force application during bottom bracket removal, saving time and improving efficiency. A practical choice for serious bike maintenance. - Effortless installation: Designed for easy use by beginners. No professional skills required; just use your socket and an adjustable wrench to remove and install with ease. - Compatible and portable: Compact, lightweight and easy to carry. Suitable for square and spline bottom brackets and convenient to store in a repair kit for quick field or home use. - 2-3 practical use scenarios: - Home workshop: Replacing or servicing a worn bottom bracket on road, mountain, or commuter bikes. - On the go: Field repairs during long rides with minimal tools required. - Bike shop: Efficient BB removal and installation to speed up service.