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  2. Pencil - Wikipedia

    en.wikipedia.org/wiki/Pencil

    A pencil (/ ˈ p ɛ n s ə l / ⓘ) is a writing or drawing implement with a solid pigment core in a protective casing that reduces the risk of core breakage and keeps it from marking the user's hand.

  3. Mechanical pencil - Wikipedia

    en.wikipedia.org/wiki/Mechanical_pencil

    A typical construction of a ratchet-based mechanical pencil. A mechanical pencil or clutch pencil is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" / ˈ l ɛ d /.