[simple design]: with its simple design and easy operation, students can learn and understand circuit principles intuitively through hands experience [material]: made from pp and metal, this physics labs equipment is sturdy, ensuring student during use [ideal teaching aid]: the educational single pole knives switch serves as an ideal auxiliary tool for teaching physics in primary and secondary schools as it effectively enhances students' interest in learning and practical abilities [educational]: this single pole double throw switch, specifically designed for primary and secondary school physics and electrical experiments.it aids students better understanding and mastering circuit knowledge [compact]: the single pole double throw knives switch set is small, lightweight, easy to store, and carry around making it suitable for use in classrooms or at home, Weight: 2.3589462034 Pounds, Manufacturer: N\A