Hey model builders and painters! If you're tired of paint dripping down the sides of your Mr Color bottles, these GT51 spouts are about to change your hobby life. This 5-pack means you can outfit multiple paint bottles at once - no more messy threads or wasted paint! The design is seriously smart: they fit inside the bottle opening like a plug, creating a clean pouring spout that directs paint right where you want it. No more shaking bottles and getting paint everywhere, no more using separate funnels that just create more things to clean. They work with Mr Color paint bottles perfectly, making it so much easier to transfer paint to your palette or airbrush cup. If you do a lot of Gundam models, miniature painting, or any kind of scale modeling, these little spouts will save you time, money on wasted paint, and plenty of frustration. Keep your workspace cleaner and your painting process smoother. Once you try them, you'll wonder how you ever managed without them!