Package content: You will receive 4 spinning pens, sufficient to meet various usage and replacement needs. Reliable material: The spinning pen features a symmetrical design. The tip is made of TPR soft rubber, the barrel is constructed from ABS material, and the dynamic balance support ring is made of aluminum alloy, ensuring durability and long-term use. More stable: This spinning pen measures approximately 21.5 cm (8.46 inches) in length. Stainless steel beads are embedded at both ends to achieve balanced weight distribution, allowing for smooth pen spinning. Decompression toy: Suitable for both children and adults, this pen can be used to train hand-eye coordination, improve focus, memory, and learning abilities. It also helps relieve stress from work or daily life. Gift idea: These spinning pens make great gifts for friends, relatives, colleagues, and classmates during holidays such as Thanksgiving, Christmas, New Year, or birthdays. Color: As shown (Red, Blue, Black, Silver) Material: ABS + Aluminum + TPR Package Contents: 4 x Spinning Pens (1 piece each color) Note: This product is a spinning pen without refill capability. Adding refills may disrupt the balance and affect performance. It is recommended not to insert any refills. The package includes only the items listed above; other accessories are not included. Please note that lighting and monitor settings may cause slight variations in color compared to the actual item. Measurement allows an error of +/- 1-3 cm.