Our Applicators come in half oz. bottles, one oz. bottles and two oz. bottles. The non-stick half inch stainless steel tips come in sizes 15, 16, 17, 18 and 19. The most common for drawing is the 16 but for fine lines the 19 is preferred. Everybody has their own style and learns to manipulate the different tips for the desired result. The low density plastic make it super easy to squeeze and the black caps will work with all the sizes so switching sizes is no problem. To clean the tips simply fill an empty bottle with water and force the water through the tip. Never use needles or pins to clean out the tip. They can scratch the inside of the metal tip causing it to clog.