Copic sketch is one professional pen, there can refillable. It have permanent, alcohol based ink, as is fast, acid-free past, the laws toxic. Copic sketch is tonerkompatibel, like tips can changed out. Pen have two standardspidser, one medium wide tip about. 2-6 Mm in it one end past, the laws one brush in it other. Brush form difference medium dè general copic fields past, the laws copic sketch. Cap is colored, sa you quickly finds it right color. Copic sketch is popular among both professional designers past, the laws kunstneramatører.