Setup, Compatibility & Care
Setup: Ensure the freewheel notches are clean of debris before inserting the tool. Always verify that the tool is fully seated into the two notches. Using a skewer to keep the tool pressed against the freewheel is the standard operating procedure to prevent tool slippage and component damage.
Compatibility: This tool is compatible exclusively with Sun Tour two-notch freewheels. The notches measure 25mm from outside to outside, and the internal bore is 10mm. It is not compatible with Shimano or other spline-based locking systems.
Care: Wipe the tool clean with a shop rag after each use. Store in a dry environment to prevent surface oxidation, although the heat-treated finish is resistant to environmental corrosion.