Japanese Shuriken Stealthy Dozen Throwing Knives Overall Length: 6 Inches. Blade Length: 2.8 Inches, Blade: Double Sided, Factory Sharp. Blade Thickness: 2.5mm; Blade Material: 440 Stainless Steel. Handle: 2.4 Inches, 4 Balanced Cutouts. Includes: 12 Throwers, Folding Nylon Case.