70/80/90/100/110mm Octagonal (8 side) Replacement Blade for Heavy Duty ELECTRIC Rotary Cutter (100 MM) Octagonal (8 side) Replacement Blade for Heavy Duty ELECTRIC Rotary Cutter Available in 70, 80, 90, 100, and 110mm sizes Works with all electric cutters with same hole pattern Heavy duty rotary blade SK-5 Steel