Personna Utility Blades 10 pack Heavy Duty - 2 Notch Utility Blades - 10 Pack Personna Part No. 61-0003 - Individually wrapped 2-Notch Design Fits All Retractable Utility And Fixed Blade Knives Replacement Razor Blades for Pocket Utility Knives, Floor Knives, Utility Cutters / Knives & More Made From Carbon Strengthened Steel - Thickness 0.0235" - Length 2.458" - Height 0.75