Quick Flick opening, press on the thumb stud to deploy the blade. This is not an automatic/switchblade. Reversible clip design for both left and right hand user. 440C stainless steel with a Rockwell hardness of 58-60 C. razor honed cutting edge with mat finish blade with Tucks logo. Tucks short for Tuckerman its named after Tuckerman Ravine perched on the Southeastern side of Mount Washington. - Features: 3 7/8 length closed - Non slip G-10 handle - Removable pocket clip - Blade locks open for safety