This Ontario Rat 1 folder features a 3 1/2" flat ground modified drop point plain edge blade of D2 tool steel. Black scales over full steel liners for strength. Linerlock. Dual thumbstuds. Drilled and tapped on all four corners for right or left side tip-up or tip-down carry. ~5" closed. A great quality knife with excellent blade steel at a reasonable price. Imported NOTE: D2 is a high carbon tool steel and may discolor or rust. This is not a flaw in the steel, simply it's nature. Keep blade clean, dry and lightly oiled if you wish to try and maintain the original finish.