(plural PK nails)
"PK" from the initials of the Parker-Kalon Company, the original manufacturer.
"pk-nail." YourDictionary, n.d. Web. 19 December 2018. <https://www.yourdictionary.com/pk-nail>.
pk-nail. (n.d.). Retrieved December 19th, 2018, from https://www.yourdictionary.com/pk-nail
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