High Speed Steel Circular Knives For MetalMaterial: HSS,Website:http://www.chinabettool.com, High Speed Steel, other materialsType: Standard, Non-standardProduct Description:The circular knives have many other names, such as slitter knives, slitter blades, shear blades and so on.This kind of knife has many shapes, some top knives are with sharp angle, some is with  90°angle, and bottom knives is much different.These knives can be used to cut copper strip, aluminum strip, copper foil, aluminum foil, paper, stainless steel and so on.We can provide high precision knives, the thickness tolerance can be ±0.001mm, and flatness tolerance can be 0.002mm, it will be processed as your drawing.