Benchmade Serum 5400 Dual Action Folding Knife (3.47 Inch Blade) exclude they will not work with

they will not work with any other model

Two O-rings

The tail switch plus side switch and compatibility with 18650 Li-ion as well as the cold-resistant CR123A batteries makes the FD41 stand out when searching

Focus control adjustment allows for broad or directed beam

Length： 125

Benchmade Serum 5400 Dual Action Folding Knife (3.47 Inch Blade) exclude they will not work withAXIS dual action mechanism Modified drop point blade 154CM stainless steel blade (58 60HRC) Black machined G10 handle scales with full stainless steel liners Reversible tip up pocket clip Features Blade Length: 3. 47" Blade Thickness: 0. 120" Handle Thickness: 0. 580" Blade Material: 154CM Stainless Steel Blade Hardness: 58 60HRC Blade Style: Modified Drop Point Weight: 4. 63oz. Pocket Clip: Tip Up, Black, Reversible Lock Mechanism: AXIS Dual Action