Uni-Ball One P: The cute and high-quality texture that fits in your hand and has a smooth writing experience [Features] Equipped with a stabilizer mechanism that provides a stable writing with a low center of gravity Design: A sweet and sweet shaft shape that allows you to feel soothing during your daily life. We aimed to create the perfect shape that is short but easy to hold and write on Lead Diameter: 0.02 inches (0.5 mm); Ink Color: Black Size: Shaft Diameter 0.5 x Thickness 0.7 x Total Length 4.6 inches (13.9 x 19.2 x 116.8 mm); Weight: 0.5 oz (13.7 g)