This was purchased for my son's school, but he hasn't used it. Metal drafting mechanical pencil with lead refills. Compatible with 0.3mm, 0.5mm, and 0.8mm leads. - Mechanical Pencil Model: Drafting Mechanical Pencil - Lead Size: 0.3mm, 0.5mm, 0.8mm - Accessories: Lead refills (HB) - Material: Metal Thank you for looking.