Whetstone Cutlery Matrix Pocket Knife with Black Blade MATRIX (black finish)OPEN LENGTH: 9-3/8" CLOSED LENGTH: 5-1/2" BLADE LENGTH: 4-1/4" BLADE MATERIAL: 440 SHARPENED and SERATED STAINLESS STEEL - matte black finish HANDLE MATERIAL: Lightweight aluminum integrated with 2 black acrylic plates mounted on both sides of the handle for a clean, stylish look.