Threaded sleeve connectors are designed to accommodate a size range of 30-39mm, offering flexibility in connecting various components with different diameters within that range., Made from high-quality materials, the threaded sleeve connectors are built to withstand the applied forces and provide long-lasting durability., Hafele Threaded Sleeve Connectors 30-39mm can be used in various applications, such as furniture assembly, cabinetry, shelving systems, and other structural projects.