Park Tool HCW-16.3 Chain Whip/Pedal Wrench. The Park Tool HCW-16.3 combines two tools essential for common bicycle maintenance and repaira pedal wrench and a chain whip for removing rear sprocketswithout sacrificing functionality. With its long handle and E-nickel-plated steel construction the HCW-16.3 is a strong durable tool that is built to last equally at home in the garage or in a professional mechanics traveling toolbox.