This tool is a combination chain whip and freewheel/lockring remover wrench. It's heat-treated to prevent bending and flexing.
Featuring hardened pins that keep the chain in place, and a comfortable handle
The hex opening fits Park Tool freewheel removers
The SR-1 is approximately 14" long (35cm).
Works on 10-speed rear cog systems, and also 7, 8, and 9 cog systems
Manufacturer's Part Number: SR-1