Why choose our 22 Gray Acrylic Paint Pens Set?. Extra-Fine 0.7mm Tip: Designed for precision, the extra-fine tip allows for detailed strokes, drawing, outlining, and creating intricate mandala dots. Beautiful Gray Colors: Enjoy a stunning array of 22 assorted gray hues, from warm to cool tones and everything in between—ideal for landscapes, architecture, animals, and more.