The culmination of more than two years of design and prototyping, the Rook Knife is a frame lock folding knife with S35VN blade steel, a drop point blade, and a flipper mechanism for easy one-handed opening. Constructed entirely from metal, it's slimmer than most folding knives, but with greater density and heft. The Tricolor version features a body that's half brass-half stainless, and a blade that's black PVD coated for a hint of tactical precision.Â