Olfa 9613 SKB-2/10B Heavy Duty Safety Cutter Replacement Blades 10/Pk

Traezoid Multi-Purpose Blade Made Of High-Quality Carbon Tool Steel For Maximum Sharpness And Superior Edge Retention. Fits Retractable Safety Knife Models Sk-4 And Sk-9, And Retractable Auto-Lock Utility Knife (UTC-1)