Mantis OTF Automatic Folding Knife 4.63in Closed 3.25in Satin Partially Serrated 440C Stainless Stiletto Style Blade Green Checkered Aluminum Handle. Their commitment to quality is evident in every aspect of their manufacturing processes from the selection of the finest materials to the precision engineering of each and every knife. At Mantis Knives they use only the highest-grades of stainless steel aircraft-quality aluminum and titanium alloys to create their knives ensuring durability and longevity. Mantis knives are designed with both the user and function in mind and are easy to operate making them ideal for everyday carry. At Mantis Knives they combine the passion for knives with innovative design to create the most stylish and functional OTF automatic knives in the world. Specifications for Mantis OTF 3.25in Automatic Folding Knife: Manufacturer: Mantis Blade Length: 3.25 in Blade Material: 440C Knife Application: Folding Blade Handle Material: Aluminum Blade Finish: Satin Sheath Material: No Sheath Opening Method: Automatic Closed Length: 4.63 in Package Contents: Mantis OTF 3.25in Automatic Folding Knife Mantis OTF 816S STSR: OTF Automatic Folding Knife 4.63in Closed 3.25in Satin Partially Serrated 440C Stainless Stiletto Style Blade Green Checkered Aluminum Handle