Piranha Knives Auto Predator Automatic Automatic Folding Knife 4in CPM S30V Black Oxide Partially Serrated Blade Black Textured Aluminum Handle. Black oxide coated CPM S30V stainless blade. Textured aluminum handle. Thumb pull. Pocket clip. Specifications for Piranha Knives Auto Predator 4in Automatic Folding Knives: Manufacturer: Piranha Knives Blade Length: 4 in Blade Material: CPM-S30V Knife Application: Folding Blade Blade Shape: Spear Point Handle Material: Aluminum Blade Finish: Black Oxide Lock Type: Button Lock Opening Method: Automatic Closed Length: 5 in Package Contents: Piranha Knives Auto Predator Automatic Folding Knife Piranha Knives P-10BKTS: Auto Predator Automatic Folding Knife 4in CPM S30V Black Oxide Partially Serrated Blade Black Textured Aluminum Handle