High quality material: Includes 4 rotating pens. Both ends feature heavy metal steel balls for enhanced stability, stronger rotation, and improved dynamic balance. The pen body is designed with an aluminum alloy dynamic balance support ring and symmetrical balance points to assist in practice, improve finger dexterity, and stimulate mental engagement. High quality design: The rotary pen features a comfortable grip with a non-slip, wear-resistant coating. It has a TPR thermoplastic rubber tip for shock resistance and cushioning. The cross-diamond embossed pattern adds a stylish touch. The ABS resin body offers high hardness, strength, and durability, making it a reliable professional-grade rotary pen. Practice tool: This pen is ideal for office workers and students, supporting focus, learning, and stress relief. Designed with a symmetrical axis, it is suitable for both beginners and experienced users. Great gift choice: Helps promote finger coordination and cognitive engagement, offering enjoyable hand exercise for children and adults alike. A thoughtful gift for students and professionals. Satisfactory service: We are committed to providing excellent customer support. If you have any questions, our customer service team is available to assist you.