Park sr18 sprocket remover chain whip 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 nylon coated handle for comfort suitable for all 18 inch single speed or fixed gear cogs made in the usa and covered by parks legendary limited lifetime warranty