All Copic markers feature replaceable nibs which can be renewed if worn, damaged or dirty. A quick and easy process when using tweezers. Please note that the nibs used in Copic Sketch and Ciao are different from Copic Classic. A replacement nib that can be exchanged with Copic Sketch's Medium Broad nib. With this stiff felt-tip you will be able to easily draw very thin lines. Size: 5×60×115 mm Copic SketchSketch Fine nib is an exclusive optional nib for Copic Sketch marker. It allows you to gain different touch than standard Super Brush. Fits light gray end (Medium Broad nib side) of Copic Sketch.