Pipe Bomb

The pipe bomb is extremely powerful and can easily kill normal Infected in one blast. It draws the regular Infected to it, with a small beeping device, which allows it to destroy a dozen Infected if tossed in the right area. This grenade has a lot of power and can easily knock down/kill you and/or your teammates if it is thrown poorly. It is much rarer than the Molotov, but much more useful.