You are bidding on a Nice Dual-Action Benchmade "SERUM" Switchblade Pocket Knife. Model# 5400S. Part of the "Black Class" of high-quality American-made Benchmade Tactical Knives. Features a Partially-Serrated 154CM Stainless-Steel Blade with Non-Glare Black Finish & Dual Thumb Studs, and Black G-10 Handle with patented Axis Locking Mechanism and Slide-Lever Switch on both sides, and a removable "Tip-Up" Belt/Pocket Clip. Features Dual-Action, so the blade can be opened automatically by lightly pulling-back on the side-release switches, or simply open it manually with the thumb studs! Measures 8.09" overall length with a 3.47" blade, weighs 4.63 oz. This knife is NEW, NEVER USED and is in MINT CONDITION overall. Blade has original factory-sharp edge, surfaces look clean without any visible scratches or dings and fires fast with solid lock-up and closes without peaking. Includes factory Box & Paperwork (not shown). Recently discontinued and getting harder to find, this one should make a fine addition to your collection! Please feel free to ask questions before bidding. Thank you once again for your interest, and good luck bidding!