Description MADE IN JAPAN Extremely compact yet refillable One of the world's smallest ballpoint pens with a retractable tip. Convenient to keep in your wallet or business card holder for when you need it. Comes with a card-sized pen holder! Specifications Soft ink, low viscosity oil-based ink, ball diameter: 0.5 mm Barrel Aluminum Tip/Knock Brass Clip SK material Body size Maximum width: 5.6 mm Barrel diameter: 3.7 x Total length: 91 mm Body weight 2.8g PP card holder W: 85.6 x H: 54 (including holder: 60) mm Package (inc. body) W: 70 x H: 152 x D: 6.5 mm