Introducing the SAV-IT Closures A21066, designed specifically for 12 mm and 13 mm culture vessels. These closures provide a reliable seal, ensuring optimal storage and protection for your biological samples. Made from high-quality materials, they prevent contamination and evaporation, maintaining the integrity of your cultures. Each pack contains a sufficient quantity to meet your lab needs, making them a practical choice for researchers and scientists. Easy to use and compatible with various applications, these closures are essential for any laboratory focused on molecular biology. Secure your samples with confidence!