Spyderco Police 4 FRN (4.39" Satin Bohler K390) C07FS4K390 Spyderco Police 4 Lightweight (C07FS4K390) - 4.5" K390 Satin Spyderedge Blade, Blue FRN Handle The Police 4 is the largest member of Spyderco's select family of lightweight knives featuring K390 MICROCLEAN tool steel blades. Ideal for extreme... $251.00 $139.99 Choose Options Compare