Set of two Digital Kolor Pro 14' x 7.88' (35.56 cm x 20 cm) 16:9 HD video format heavyweight paper charts Front of chart has 18 reference color targets plus 11-step crossed gray scales Back of chart has 6 primary vector color patches and framing for apertures for 16:9 (HD), 3:2, 4:3 (SD), and 1:1 formats Achieve optimum white balance and color True blacks for gamma, tonal reproduction, and richer-looking video Designed in Boston and made in the USA