The OZZE Automatic Mechanical Pencil is a reusable writing and drawing tool designed for accuracy, convenience and consistent line width. Its 0.5 mm lead format works well for mathematics, technical drawing, note-taking, forms and detailed annotations. The push-button mechanism advances the lead as required, eliminating the need for a sharpener. Specifications: 0.5 mm lead compatibility, retractable lead mechanism, refillable barrel and pocket clip. Replacement leads are sold separately and can be added to institutional stationery kits