Uni Prockey Fine Point and Bold Point Marker Pen 15-color Set PM150TR15CN Thickness 5cm length 17.4cm x 18cm x side Bleeding is small even to write it on a piece of paper, there is no back reflection. The write metal, glass, plastic and also, there is no unpleasant smell. It is 15 color set of twin type of fine print round core and bold angle core. Black, blue, light blue, green, yellow-green, yellow, orange, red, gray, purple, red purple, soft pink, pale orange, ocher,, ink color is brown.