Nightstick

The Tonfa (or Police Baton) is a new close-combat weapon introduced in Left 4 Dead 2. Not much is known about it at the moment.

The tonfa is not really meant to be used against Special Infected, because using it on a Boomer would cover you in bile, and killing a Spitter would leave you right in the middle of the goo. It would also take time to get to a Charger, Jockey, Hunter or Smoker. Against a Tank or Witch it would do little to no damage.

Trivia

 * The tonfa was a Okinawan weapon used by the rural chineses, in attempt to protect themselves from the Ninjas. But today is used by the police.
 * The tonfa is dual-wield, but it's unknown if it will be in the game.