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Disc Knife Upper Lower Knife Top Bottom Circular Blade for Paper Cutting. High Hardness Material: Available in 9CrSi, Cr12MoV, D2, M2, and Hard Alloy with HRC 58-92. Wide Size Range: Outer Diameter 60-150mm, Inner Diameter 35-80mm, Thickness 0.8-20mm. Low MOQ: Minimum Order Quantity starts from 10 pieces. Fast Lead Time: Peak and off-peak season lead time within 15 workdays. Multi-Application: Suitable for textile, plastic film, paper cutting, and lithium battery processing. Customizable Options: Customized hardness and shape available upon request.