Large Mandala Dotting Tools - sizes (17-28) These 6 large double sided dotting tools are great for canvases and larger items to dot. Diameter of the tools range from 8.5mm to 15mm which create 12 different dots, ranging from 11mm to 18mm (0.43 to 0.7 inches). They are a continuation in size of the Mandala Dotting tools (size 1-16). Please note, all reviews are organic and have not been solicited, discounted or paid for. Please use with any fluid acrylic paint. (Using enamel paint, or wiping with any alcohol or solvents will crack the tools over time)