Gel type crayons for smooth drawing. You can draw with light pressure points. Refills are economical. Holder type keeps your hands clean. (Oil based pigment) Maximum diameter 0.4 inches (10.9 mm), total length 4.8 inches (121 mm), weight 0.3 oz (9.4 g). AP/CE approved. This set includes a set of white, yellow, pale orange, loose orange, blue, peach color, murasaki, blue, green blue, green, green blue, green blue, green and hilari.