https://www.amazon.com/dp/B0006SJAR0?ref=nb_sb_ss_w_as-reorder-t1_k0_1_4&amp=&crid=ICE9BMQ8NCXP&amp=&sprefix=olfa

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This blade has been working well for me. The snap off blade means you can keep a sharp edge/point relatively cheaply. Each "section" of replacement blade is between 0.10 and 0.15 cents.