Is that last shot just a little out of reach? Then just grab your handy dandy cue extender and finish off your opponent. Dufferin's 11'' cue extender screws right into the butt of your cue. Simply remove the bumper from your Dufferin 500 series or Rebel series cue. Remove the replacement bumper from the extension and screw it into the butt of the cue. You then simply attach the extension to your modified cue whenever you need to use it. Now you can easily and quickly attach your new extender for that out of the way long shot. The Dufferin extender only fits series 500 cues. This extender is an Accu-Loc quick release joint.