Feature:1. Expanded Compatibility: Seamlessly adapt from 1 1/4in UNC male threads to for Plus round shanks, easily connecting coring drill bits for efficient drilling performance.2. Enhanced Structure: Constructed from carbon steel, our coring drill bit adapter ensures durability and long lasting performance, making it suitable for demanding drilling tasks.3. User Friendly Design: This concrete adapter simplifies your drilling process with its intuitive design, allowing for easy connections that ensure smoothly and efficient use every time.4. Secure Connection: Experience peace of mind knowing our coring drill bit adapter provides a secure and stable connection, allowing you to perform drilling tasks safely and confidently.5. Optimized for Performance: Specifically designed for rotate mode, our adapter prioritizes safety and performance by avoiding hammer mode, protecting your tools and workpieces during use.Specification:Item Type: 1 1/4in UNC to Round Shank Coring Drill Bit AdapterMaterial: Carbon SteelShank Type: Round Shank ( for Plus)Thread Size: 1 1/4in UNC male thread.Package List:1 x Coring Drill Bit Adapter