Park tool chain whip shop sprocket remover sr2 2this shop quality chain whip gives you incredible leverage without worry of slippage features works on 5 to 11 speed cassettes and freewheels hardened bolts hold securely and make chain replacement easy heavy duty heat treated head round vinyl coated handle the sr 2 is approximately 15 long 38cmbuypark tool workshopfrom chain reaction cycles the worlds largest online bike store