Description This self-inking rolling stamp is designed for music enthusiasts and educators, offering a seamless way to create precise musical staff lines. Its compact design ensures easy handling, while the durable roller mechanism delivers consistent results. Perfect for classrooms, it simplifies music notation and enhances creative learning experiences. Features -Color:Black -Material:Plastic -Size:6.20X4.50X2.80cm/2.44X1.77X1.10in-Unique design: the selfinking lines stamp features a unique fiveline staff design, enhancing music theory learning efficiency and making music notation clear and easy to understand.-Versatile use: ideal for piano and small guitar teaching, this stamp offers rich marking functions to aid precise performance guidance.-Innovative roller: the rolling stamp's innovative form allows for easy music notation marking, boosting practice and teaching interactivity.-Portable and compact: its compact design makes it perfect for use in music classrooms, home practice, and outdoor teaching scenarios.-Effective teaching aid: this tool efficiently supports music theory teaching, sparking student interest and accelerating the learning processPackage list: 1 x roller stamp