When the Deli 1-Hole Plastic Sharpener is sharpening the pencil, the lead is prone to break due to uneven force, which is one of the major problems in the pencil sharpener manufacturing process. The Deli 1 Hole Pencil – employs accurate die-casting construction skills to avoid the leads of the pencils to break, making the process of sharpening much better and cost-effective.