Copic Sketch Markers are double-ended refillable markers with fast-drying, permanent non-toxic ink. Features a super brush nib on one side and a medium-wide nib on the other end of the oval-shaped barrel marker. Replaceable nib with 3 options. This set of 6 blending basics includes the Copic Sketch Markers 0, B0000, N1, RV10, Y0000 and the Copic Multiliner SP 0.3 Black Pen.