The park tool sr1 sprocket remover is a shop quality chain whip that gives you incredible leverage without worry of slipping a handy combination of chain whip and sprocket remover park tool sr1 sprocket remover 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 toughest of jobs ny