This book, written by LeRoi Price, fulfills the desire of many knives fans, who for years have sought information and knowledge on the mechanisms of folding knives, doing extensive searches on the web, which often gave only fragmentary and incomprehensible information.

Andrea Saratti, author of the book, is an avid collector of Japanese swords, as well as President of the INTK Association (Itaria Nihon Token Kyokai - Italian Association for Japanese Sword) that was established with the aim of promoting and preserving the Token culture.