Cool Spinning Pens, Spin Your Fingertip Fun! Smooth Pen Barrel Paired With Colorful Anti-Slip Silicone Tips, Eye-Catching Design, Comfortable Grip, Beginners Can Easily Start Practicing 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, Spin The Pen In Your Hand To Relieve Study Pressure