ThePark ToolChainringNutWrenchmakes chain ring bolt installation and removal easy to help take the chore out of your bike maintenance. This bike tool will securely hold the slotted nut to prevent spinning while you're tightening or loosening the bolt. What's more it is double ended adding versatility and allowing it to fit most slotted-type nuts. A bike maintenance essential this is a handy addition to your workshop tool kit. Park ToolChainringNutWrench Features The CNW-2 makes chain ring bolt installation and removal easy It securely holds the slotted nut to prevent spinning when tightening or loosening the bolt Double-ended to fit most slotted-type nuts More info