[Suitable for Bottleneck Size 24-410]-- Mainly used in the market for 2 oz acrylic paint bottles. May fit other 1 oz, 4 oz and 8 oz bottleneck sizes 24-410. You can change the cap directly to switch different types of needles, so you don't have to change the whole bottle, which is very convenient to use and saves a lot of trouble. With just a twist, the needle can be easily attached to the bottle, making it easy to use and a must-have tool for handmade projects. [Two Perfect Needle Types]-- Equipped with round needles and flat needles, these two stitch types are the most suitable for coloring. Each needle has a silicone cap that effectively prevents the liquid from drying out. Round needles are more used for drawing lines, while flat needles can be used for coloring large areas. For different scenarios and use needs, you can choose different needle use. Suitable for fresher lines and more complex details in automotive applications. [High Quality Material]-- Our paint covers are made of high quality PE plastic, which is flexible, good toughness, not easy to damage and can be reused. [Perfect Gift for DIY Craft Lovers]-- These caps and nozzles make it easier to apply your paint and create the pattern you want to show. Get together with your friends and use these tools to help you create together. For DIY enthusiasts, this gift is absolutely the best. Just get it. Colour:Green Material:Plastic Package Contents: 8x bottle cap covers 8x flat needles 8x round needles 8x needle caps 1x straight needle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.