Package Contents: you receive 6 vial caps and 6 vial protective cases; They come in 6 bright colors, red, orange, yellow, green, blue and , which can help organize the contents of different vials, and can quickly identify and find Leakproof Secure Seal: the snug reusable vial caps form a tight barrier, effectively blocking dust and stopping liquid evaporation, keeping your 3ml vial contents well protected at all times Reusable and Easy to Clean: the vial caps are made of sturdy material for long term use; Simply rinse with water for quick cleaning and convenient reuse; You only need to purchase once to meet your bottle storage needs and extend the life of your liquid Sturdy Vial Protection: made of quality tough elastic material, this vial adapter can resist impact and environmental pressure, providing reliable protection to the safety of your 3ml vials Versatile Multipurpose Design: our vial protectors are ideal for labs, DIY projects, and home storage; Fits 3ml vials, vial storage boxes, empty vials, and 3ml sterile vials and more, good for both travel and daily organization needs Features: Keep your 3ml vials organized and protected with this practical cap and case set. Designed for convenience and reuse, each piece features a secure leakproof seal. Easy to clean and built to last. Enhance your workflow with these colorful and vial caps and cases. The snug fitting lids prevent leaks and evaporation, while the vibrant colors help quickly distinguish between different substances. Ideal for professionals and hobbyists alike who require reliable and reusable vial protection. Specifications: Material: quality elastic material Color: red, orange, yellow, green, blue and Size: suitable for 3ml vials Notes: Manual measurement, please allow slight errors on size. Thecolor may exist a slight difference due to different screen displays Package Contents: 6 x Vial caps 6 x Vial cases 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.