Premium Quality Material: These spinning pen rod are made of quality ABS material with the aluminum alloy dynamic balance support ring in the middle, the ends parts adapts TRP soft rubber with steel ball ends, you can easy to tighten it up/off. Good and sturdy balance will provide easy, light spinning experience for you, prevent the pen from dropping. Safe, Quiet, Easy-hold and Non-slip Pen game set for you. Beneficial Game & Attractive Design: Pen spinning game would helps you to enhance the flexibility and coordination of your fingers and exercise your brain power, improve concentration, relieve the pressure of work and life. The drop-resistant rubber ends and balance deign with classical siliver and black color, a great attractive spinning pen choice. Package Contents: Set of 2 pen, black & siliver, each gaming rotating pen packaging with plastic pen holder, thoughtful packaging for you. Not only suitable for experienced pen spinner, but also great for pen-game novices, fans. Perfect pen gaming finger gift for your families, friends, schoolmates, workmates. Let's feel the joy of moving fingers. Size & Weight: Long: 8.6"/21.8cm, Detachable-ends: 1.6"/4.1cm. Total: 0.9oz/26g. Moderate weight suit for most pen game fans, you also can add some weight in the ends caps as you want. Detachable design also easy for you clean and storage.