The length of the most of the manicure pens is 18.5cm ± 0.5cm diameter: 0.5cm ± 0.1cm; The length of nail art brushes is about 13.2cm diameter is 0.7~0.8cm. Pigment liner longer and lighter than liner pen can draw precise pattern. Line pen can draw lines and leaves of grass etc.; Petals pen can draw petals. Coloured drawing brush pen (oblique) can draw out 3D flowers. UV gel pen necessary for nail art drawing. Point drill pen can get the accessories. Fan flower pen can get paillette. Carving brush pen is suitable for beginners or proffessional nail art.