The Uni-Ball Signo Gelstick is an economy pen only in price. It’s a simple long-lasting pen ideal for daily use at work or school, yet features Uni’s high-grade pigment gel ink, resistant to water and light; a stainless-steel tip with tungsten-carbide ball; plus high-tech twin-ball ink control to prevent leaks. All this in eight vibrant colours. 0.7mm tip writes a 0.5mm line.