Includes 100 polypropylene chips from the black and gray color family. Measuring 3 x 1.9", making them large enough for spectrophotometer readings, these chips are double-sided with matte and glossy finishes and are varied between 1 and 2 mm thicknesses for more accurate color visualization. Each chip also features a key ring hole in the top corner for organizing into palettes and has the Pantone color number and name printed on it for easy reference.