Benchmade 9101SBK Auto Stryker The 9101 next generation Auto-Stryker® incorporates a larger, stronger locking button, open back spacer design for easy maintenance and increased spring force. Made in USA. Finish: Black Blade Steel: 154CM (58-61) Handle Material: 6061-T6 Aluminum(Black) Mechanism: Push Button Automatic Action: Automatic-opening Blade Steel: 154CM (58-61 HRC) Blade Length: 3.60" (9.14cm) Blade Thickness: 0.124" (3.15mm) Open Length: 8.30" (21.08cm) Closed Length: 4.70" (11.94cm) Handle Thickness: 0.50" (12.70mm) Weight: 4.20oz. (119.07g)