13/16 Extension socket allows the plug wrench to be used on newer models where the water neck prevents to use of plug wrench aloneKit includes wrench and socket extensionUse one side for installation and flip it over for removal13/16" ratchet spark plug wrench made specifi cally for today's water cooled 2-stroke engines with those hard to reach spark plugsThe ratchet mechanism makes installation and removal of spark plugs very easy