Item Name Zebra Item No. P-MAS85-W Keywords Stationery Office Supplies Writing Materials? @Mechanical Pencil Automatic Write Draw Product Size(CM) 10 x 137 x 10 mmCore Thickness 0.3mm Product Introduction Delgard protects the lead from all directions with the latest mechanical pencil Newly developed Delgard system that solves the "breaking of the lead" and "clogging of the lead" that you feel dissatisfied with using the mechanical pencil. With conventional mechanical pencils, when excessive writing pressure is applied to the tip, the tip that supports the lead cannot support the sharp lead and breaks. By solving this problem with the Delgard system, even if you write fast or deeply, it will not break anymore. Therefore, by installing a spacer that can be written all the time, it fills the gap and prevents core clogging. With conventional mechanical pencils, the lead is broken or misaligned inside the mechanical pencil due to an external impact such as dropping, causing a lead jam. This problem is solved by Spencer, so you can get the best performance in the most important situations such as daily learning and testing.