Feature 1: Available in a wide variety of color variations with black ink. Choose from the exquisite color variations of 6 black colors to suit your needs Feature 2: iD design for a new feel that fits your hand. The special shape combines hexagonal and round shape to allow the pen to gently touch the finger, providing a natural fit Feature 3: High-quality and stylish design that is easy to use even in business settings Specifications: Ball diameter: 0.02 inches (0.4 mm) / Shaft color: Light gray [Body Size/Weight/Material] 5.7 x 0.5 inches (14.5 x 1.3 cm), 0.4 oz (12 g); Clip: Stainless steel; Shaft / Stopper: ABS