Magic House Pencils
Magic House pencils look like standard wooden pencils in Crayola colors but they hide a mechanical interior. Both user- and environmentally-friendly, the pencils eliminate sharpening and feature a lead chamber designed to recognize the need for more lead when the tip of the pencil touches the writing surface, also eliminating the need to advance the lead. What's more, the pencils are refillable simply by pulling out the eraser cap and inserting lead.
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