A - H: TOMBOW MONO graph Lead Size: 0.5mm Length: 148mm Diameter: 10.3mm Weight: 17g Made in Japan I: TOMBOW MONO graph Lead Size: 0.3mm Length: 148mm Diameter: 10.3mm Weight: 17g Made in Japan J: uni alpha-gel HD II Lead Size: 0.5mm Length: 145mm Diameter: 12mm Weight: 17.7g Made in Japan Uni Alpha-Gel Tombow Mono Graph 0.5mm/0.3mm Mechanical Pencil Eraser Cartoon Anime Manga Rabbit Dog Horse Koala Bt21 Japan