Reproduce contours: this precise contour knife is suitable for reproducing irregular shapes in all types of ceramics, molds, carpentry, flooring, carpet cutting and more. Easy to use: By adjusting the strength of the golden button, the pen is inserted and fixed. Use a roulette wheel or the tip of a pen to draw an object, while a pencil can draw the same outline on paper or any object in same time. Design at Both Ends: The knurled end features bearings for smooth and curved shapes, while the tip is suited for more intricate angles and lines. Convenient design: the position of the stylus can be moved to either end, allowing you to change the way you draw at will, and for complex lines there is no limit of speed. AND LONG LIFE: This streamlined blade is made of metal and ABS material, strong and durable. roller bearing shafts are smooth, wear resistant and stainless. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.