Zebra DelGuard Mechanical Pencil Type ER Blue Set of 4 0.5mm P-MA88-BL-4AZ

[DelGuard] No more breaking. The DelGuard system protects the core from all directions! [Features] Lead will not break (lead may break if you knock the pen more than four times while writing with the lead still attached) [Core diameter] 0.5mm [Body size] Maximum shaft diameter 11.6 x 143 mm / Weight 11.3 g [Body material] Resin