The park tool sr 11 sprocket removerchain whip and freewheel lockring remover wrench is heat treated to prevent bending and flexing with a molded handle for comfort park tool sr 11 sprocket removerchain whip features a handy combination of chain whip and sprocket remover heat treated body to minimise bending and flexing the hex opening fits all park tool freewheel removers and provides a good long lever to work with hardened chain pins provide strength for the t