Convenient cleaning tool: Sumizumi Eraser Hard, with slider (used), easy to use. - Product Name: Cleaning Master Sumizumi Eraser Hard - Accessories: 2 sliders - Purpose: Cleaning tool Dimensions Length: Approximately 9cm, Width: Approximately 2cm, Thickness: Approximately 1cm Slider Length: Approximately 9.5cm, Width: Approximately 3cm, Thickness: Approximately 1.7cm Please understand that there may be some errors due to amateur measurements. Please refrain from purchasing if you are concerned about minor details due to being stored at home.