Originally designed as back-up for law enforcement and military personnel, the Pentagon series is now popular with outdoor knife enthusiasts as well. The Pentagon offers the instant choice between a serrated or beveled edge. Twin thumb notches enable accurate blade orientation and downward control. The aggressively checkered, flared handles provide confident gripping as well as sensation feel and balance. *Rarity Note: The SOG Pentagon Cocobolo is exceptionally rare due to being a limited production of 250 knives by Kinryu Knives. Also, it was available for sale in Japan as the last two pictures are from a 1994 Japanese knife catalog.