THE SHOP COMPANY Rotary Cutter Blade Replacement Pack - 12 Count (45mm SKS7) Custom designed blade separators prevents blades from sticking together and allows for easy single blade removal. No more bleeding fingers trying to replace your blades Extremely sharp 45mm blades made from added tungsten and chromium (SKS7) insures minimal effort for maximum cut Tough plastic case will protect the blades from getting bent or crushed Extra Blades - 10 + 2