Ballpoint pen ink cartridge can be refilled easily (Black ink included);Constructed with heavy durable silicone touchscreen sensitive tip;Functions as Touchscreen Stylus, Ballpoint Pen, 4 Ruler, Level, Screwdriver, and Flathead Screwdriver Tip.;Six in one uses! Can be used with any touchscreen device such as tablets, phones, GPS...;This stylus pen glides effortlessly on the screen (No more smudges)