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Swivel Joint

 

The plug wrench that comes with the bike is the absolute best. It is the right length and fits well into the holes. Use one of the tool kit wrenches to break the plug loose with the socket, then switch to the appropriate 1/4" drive ratchet with socket that mates with the oem plug wrench. You'll have them all changed in no time, even if you have large hands. (I was able to do my plugs in an hour or less total.)