Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An excellent book on the development of the Spyderco knife.

This excellent knife became an instant favorite when it was first introduced to the public. It also became very popular with the law enforcement community. If you are someone who owns and carries a Spyderco knife, you will want to read this book. It is loaded with clear and detailed photographs of the various Spyderco models. This text covers the history and inner workings of the company, as well as how their innovative designs took the knife world by surprise. This book is well-written and a joy to read.. As a knife enthusiast, I own numerous quality knives. I also have several Spyderco knives and I found them to be among the most reliable kniives in my collection. If you love Spyderco knives, or just love all kinds of blades, you will want to read this book.Rating: 5 Stars. Joseph J. Truncale (Author: Knife Handling & Knife Defense for Law Enforcement Official Course Manual).