Derwent twin hole sharpener with a 11.5mm diameter hole on one side and a 8.25mm hole on the other. Sharpens to a perfect point with carbon steel blades. Reviews There are no reviews yet. Be the first to review “Derwent Twin Hole Pencil Sharpener” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.