Standard nozzles and caps (Green Stuff World)Dropper nozzles and caps Green Stuff World's standard dropper caps and nozzles are the perfect universal replacement for most modeling paint bottles on the market, compatible with 17 ml and 60 ml bottles with a standard 10 mm diameter neck. These caps and nozzles have traditionally been used on all acrylic paint bottles for modeling. They allow for precise paint dispensing, preventing drips and waste, and are much more practical and secure than low