These are brightly colored ballpoint pens. The metallic colors shimmer and shine. They can be used on black or dark-colored paper, making them ideal for black notebooks. The fine tip makes it easy to write in detail. Tip: Ultra-fine 0.4mm Mechanism: Knock type Ink: Water-based pigment gel ink Size: Pen/Shaft diameter (max) 10.5 x total length 142.8mm Case/H144 x W64 x 12mm Colors: Metallic colors/Gold, Silver, Metallic Pink, Metallic Green, Metallic Blue, Metallic Violet LJP120S4-6CM How to use: Use the pen as upright as possible with light pressure. Caution: ・Do not use for anything other than writing. ・Keep out of reach of infants. ・Avoid writing with the pen tip pointing upwards. This may cause ink leakage. ・Shaking or shocking the pen may cause ink to leak. ・Always retract the pen tip after use. ・Be careful as ink may not come out if it gets on clothing. ・Do not place in direct sunlight or in a place that becomes hot.