The automatic double action OTF knife is an impressive example of engineering. When the blade is retracted it is not under any tension. Instead spring tension is created by sliding a firing button upward. Once a certain threshold is achieved the blade is released and the spring tension propels the outward and it locks into place. The new Titan of all Titans Automatic OTF Knife represents a great balance of functionality, usability and value. The Titan has a black coated metal handle with grip inserts ensuring you can hold on to this knife. The double edge serrated dagger style blade is stainless steel black & metallic silver finish with a nicely designed blood groove in the center on both sides. Seven cutout holes are sported on the blade. The firing button is mounted on the spine making the Titan slim and easy to carry. A built in safety is featured that does not allow the blade to deploy fully if anything is obstructing its path. The black pocket clip is mounted on the back. The Titan includes a glass breaker which can also be used as a defense tool. These knives feature an improved internal mechanism for more consistent firing. Overall Length: 8.5 Inches, Blade Length: 3.25 Inches  REQUIRED FORM FOR SWITCHBLADES & AUTOMATIC KNIVES