Types of Stamps Material: Rubber This is a handmade rubber stamp. It is not an eraser stamp. These are rubber stamps, seals, and hanko made with professional-grade rubber. 150 yen discount for bulk purchases. Please comment with any questions. Perfect for studying! 4-frame type, 4-row type For recording dates when studying languages such as English, for the first, second, third, and fourth rounds. For recording the re-solving of problems you got wrong in kanji, math, etc. We created these for use in homework, school, cram schools, and home study. The material and height of the wooden base vary depending on the product. There may be blurring or misalignment when stamping on the wooden base. Please understand. Also great for messages between school teachers and staff! The sample is stamped on a business card-sized card. Wooden base size: 20mm x 50mm The height of the wooden base varies depending on the product. We do not accept made-to-order (custom or semi-custom) requests. We do not waive copyright. Commercial use (purchases for resale, use of designs, etc.) and secondary use (selling stickers, cards, etc. stamped with these stamps) are strictly prohibited. Please refrain from commercial use and secondary use. Thank you. #tama's Stamp Shop