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Circular Blade Round Knife Cutting Tool Cutting Disc for Plastic Film. Diverse Material Options: Available in 9CrSi, D2, HSS, Carbide, and Stainless Steel for various cutting needs. Customizable Dimensions: Outer diameter, inner hole, and thickness can be tailored to specific machine interfaces. Superior Hardness Range: Hardness options from 55-58 HRC to 85-92 HRA depending on material grade. Rapid Delivery: Average lead time within 15 workdays for both peak and off-peak seasons. Versatile Blade Designs: Straight, toothed, and wavy blade types available for different materials.