These 50ml round inserts are designed for use with the Z326-100H rotor by Benchmark Scientific. Each pack contains 2 inserts. These inserts are essential accessories for the Z326-100H rotor, allowing users to safely and securely hold 50ml round vessels during centrifugation procedures. Made with high-quality materials, these inserts ensure reliable performance and compatibility with the rotor. Ideal for laboratories conducting various applications such as sample preparation, cell culture, and protein purification. Upgrade your centrifuge setup with these reliable 50ml round inserts to streamline your workflows and achieve efficient and consistent results.