Cool Spinning Pens, Fun For Your Fingertips! Smooth Pen Body With Colorful Non-Slip Silicone Ends, Eye-Catching Design, Comfortable Grip, Beginners Can Easily Practice Pen Spinning. This Set Includes 4 Spinning Pens + 10 Replaceable Refills, Refills Are Detachable And Replaceable, Both A Stress-Relief Toy And A Practical Neutral Ink Pen. In Your Spare Time And After Class, Spin The Pen In Your Hand To Relieve Study Pressure