Heavy Duty Well Made Competition Throwing Knife Set Stainless Alloy Steel Sharpened Overall Lengths: 8.5, 8.75, 8.9, 9 Inches. Blade Lengths: 2.75, 4.125, 4.25, 4.5 Inches. Blade Thickness: 4mm. Blade Styles: Double Edge, Spear Point. Blade Materials: 440 Stainless Steel. Handle Materials: 440 Stainless Steel Tang. Handle Length: 3.75, 4 Inches. Perfectly Balanced Set of 4.