New Tiger 11.5" 3/8x16 Pool Cue X-Tension Kit with Key & Case - Jacoby - TCX-K1
11.5" Tiger External Extension fits on Jacoby cues and any cue that uses a 3/8x16 weight bolt. Nielsens Billiards - Joerackem. Once bumper is installed, extension can easily be added or removed during play.