The user might not know the exact term or might have misspelled something. "Enko" could be a typo for "Enko" as part of a longer term, but I'm not sure.
I should consider different possibilities. Maybe "Kansai Enko" is a brand of knives, and the numbers indicate blade length. The "free" could mean free shipping if purchased. Alternatively, "free" might be part of a product model like "Free". kansai enko 87 144 free
I should ask for clarification but also try to provide the best answer with the info available. Suggest possible interpretations and offer to help further if more details are provided. The user might not know the exact term