Versatile Compatibility: Unlock unlimited potential with the KSEIBI 619586 Core Drill Converter. Convert 1-1/4"-7 female threads to 5/8"-11 male threads effortlessly, ensuring your core drill is compatible with an extensive range of diamond core bits. A seamless fit enhances stability and provides consistent results in every application. Robust, Durable Construction: Constructed from premium hardened steel, this adapter is built for endurance. It stands up to heavy-duty use, ensuring your projects continue uninterrupted. Whether you’re working on a small DIY project or a large construction site, count on the KSEIBI 619586 for unmatched durability and performance.