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Circular saw blades are discs with radial teeth used to cut different materials such as wood and steel. They are fitted into various power saws and are available in numerous types depending on the material to be cut. Circular saw blades are generally defined by the number of their teeth that dictate how smooth they can cut. The gullet size, or the spaces between each tooth, dictates how much material it can remove. Furthermore, circular saw blades are available in varying diameter sizes and arbor sizes to fit handheld and industrial circular saws.