Fox 604Bl Vox Core Folding Knife 3.1in N690 FRN Uncoated Blue FX-604 BL. The non-slip textured FRN handle holds the N690 blade on ball bearings that can be opened with a flipper or thumb hole. With a reversible wire clip (tip-up/l-r). Specifications for Fox 604BL Vox Core Folding Knife: Manufacturer: Fox Blade Length: 3.1 in Blade Material: N690 Designer: Jesper Voxns Knife Application: Folding Blade Overall Length: 7.5 in Handle Material: FRN (Fiberglass-Reinforced Nylon) Blade Thickness: 0.1 in Lock Type: Linerlock Condition: New Handle Color: Blue Weight: 4.8 oz Opening Method: Manual Flipper Quantity: 1 Color: Blue Package Contents: Fox 604BL Vox Core Folding Knife Fox 604BL: Fox 604Bl Vox Core Folding Knife 3.1in N690 FRN Uncoated Blue