Feature: 1. Expanded Compatibility: Seamlessly adapts from 1 1/4in UNC male threads to round shanks, allowing easy connection of coring drill bits for efficient drilling performance. 2. Enhanced Structure: Constructed from carbon steel, this coring drill bit adapter ensures durability and long-lasting performance, suitable for demanding drilling applications. 3. User-Friendly Design: The adapter simplifies the drilling process with an intuitive design that enables quick and smooth connections for consistent, efficient use. 4. Secure Connection: Provides a stable and secure fit, ensuring safe and confident operation during drilling tasks. 5. Optimized for Performance: Specifically designed for rotary mode use, this adapter enhances safety and tool protection by avoiding hammer mode, preserving both tools and workpieces. Specification: Item Type: 1 1/4in UNC to Round Shank Coring Drill Bit Adapter Material: Carbon Steel Shank Type: Round Shank Thread Size: 1 1/4in UNC male thread Package List: 1 x Coring Drill Bit Adapter