We are selling stationery due to the relocation of our office. This is our first time using Mercari, and we are listing items based on advice from others. We would appreciate your understanding as we are not familiar with this process. This is a heavy-duty stapler. It uses staples of 6, 10, and 15mm. There is a guide to indicate which staple size is suitable for the thickness of the paper. The following staples are also included: - Model: No.3 - Included: Staple needles (No.3) * 2 unused boxes Please understand that this item has been used before. Please note that returns are not accepted to prevent issues such as product switching. If you have any questions, please inquire beforehand.