Item Description
| title | とある魔術の禁書目録外伝 とある科学の超電磁砲 (4) 根付ストラップ付き特装版 (電撃コミックス) |
| series | A Certain Scientific Railgun (Toaru Majutsu no Index Gaiden: Toaru Kagaku no Railgun) ,Toaru Majutsu no Index (A Certain Magical Index) |
| product type | Special Edition Manga with Bonus, Manga, Strap |
| author | Kamachi Kazuma (鎌池和馬) |
| publisher | ASCII Media Works |
| Label | Dengeki Comics |
| release date | 2009-10-1 |
| language | Japanese |
