• This replacement part fits Dahle Professional Trimmer Models 556 and 558.
• Features a self-sharpening cutting system.
• No need to worry about replacing dull or worn blades, this system sharpens as you cut to maintain a perfectly honed edge.
• The blade's precision graduated edge will remove even the tiniest sliver of paper, and produce a clean, burr-free cut.
• Please note that trimmer is sold separately. This is a replacement part only.

Please note: This product is considered a consumable product and cannot be returned once it has been delivered.