Price is for a set of 3. Individual pens are 500 yen each. Size: Maximum diameter 11.8 x total length 143.6mm Notes: Stress-free writing that doesn't wobble. Zebra Blen 0.5mm Eliminates unnoticed stress with Zebra's unique "writing vibration control" technology. This ballpoint pen is designed for smooth writing, with features such as holding the refill to prevent the pen tip from wobbling, lowering the center of gravity to prevent writing wobble, and eliminating gaps in each part to prevent internal pen wobble.