Product description
1. The tool requires a 5/8 or 16mm wrench, or just an adjustable wrench.
2. This tool is very simple to use and does not require any complicated scientific knowledge.
3. Remove the bolts on the crank arm
4. Screw in and continue to tighten the silver piece of the tool until the crank starts to move.
5. Screw the lower black part of the tool into the crank until tight.