This multifunction, retractable ballpoint pen lets you switch from one color to one of three others with the push of a finger. Pen offers four colors in one pen, and each color is in a retractable medium point. Tungsten carbide ball is a perfect sphere and very resistant and delivers a quality, quick-drying ink for smooth writing. Each four-color ballpoint pen also features a ring at the top to attach the pen to your lanyard (sold separately). Ballpoint pens are refillable.