Reliable: The rotating pen features a symmetrical design with a TPR soft rubber tip, an ABS material barrel, and an aluminum alloy dynamic balance support ring, ensuring durability and long-term use. More stable: Measuring approximately 21.6 cm (8.5 inches) in length, this rotating pen is designed for comfortable handling; stainless steel beads are embedded at both ends to achieve balanced weight distribution, allowing smooth spinning. Decompression toy: Suitable for both children and adults, this pen can be used to train hand-eye coordination, helping to improve concentration, memory, and learning ability. It also serves as a tool to help relieve stress from work or daily life. Ideal gift choice: These spinning pens make great gifts for friends, family, colleagues, or classmates on occasions such as Thanksgiving, Christmas, New Year, birthdays, and other holidays. Note: This product is a spinning pen and does not include refills. Adding a refill may disrupt the balance during spinning. It is recommended not to insert any refills. Thank you. Type: A/B/C/D/E/F/G Color: black-red / black / blue-black / silver-white / red-white / blue-white / silver-black Material: ABS + aluminum alloy + TPR Package Contents: 1 x Spinning Pen Note: The package includes only the items listed above. Other accessories are not included. Note: Slight color differences may occur due to lighting conditions and display screen variations. Measurement error allowance is +/- 1-3 cm.