The Penetrator tire deflator is another product in a series of covert defense tools designed and manufactured by GG&G. It is designed to provide a covert tire deflator, or radiator leak initiator as well as a defensive weapon that can be used in unforeseen emergency situations. In the passive mode, it looks like a large pen but by removing the pen cap a very sharp point is exposed that will aid in dealing with an unexpected threat. Two models are available, one with a 2.6" hollow carbon fiber shaft and one with a 2.6" hollow titanium shaft. Both are extremely rugged, corrosive resistant and lightweight. The hollow shafts provide an effective route to let what's inside--outside! The handle on both models is manufactured from Delrin and is grooved so as to provide a positive grip in the most demanding situations. The tip is protected by a standard pen cap which serves to protect the user when in the passive mode.