Mandala Rock Flat Head Painting Pen Dot Dotting Tools Stencil Brush Set (4 mm 5 mm 6 mm 8 mm 10 mm 12 mm 14 mm Diameter, 5 Stylus) -13 Pieces Graduated diameters: 4mm,5mm,6mm,8mm,10mm,12mm,14mm. 5 stylus ball head diameter under 3 mm. Every flat head arcrylic pen is precision cut and perfect for dot painting on canvas, stones and many other surfaces. Easy to clean with damp kitchen paper. Length is all about 15 cm. This kit will meet all your mandala dotting needs. Got compaint saying the kit is not for rock painting. Please pay attention that it suits for flat surface rocks and when dotting please make the pen 90 degree to the surface. Product description Size:set1 This kit suits for large or medium size manlada rock or art painting. Graduated diameters: 4mm,5mm,6mm,8mm,10mm,12mm,14mm,15mmEvery flat head arcrylic pen is precision cut and perfect for dot painting on canvas, stones and many other surfaces. Easy to clean with damp kitchen paper.