Features and Benefits:�5/8" Female - 1-1/4" Male Core Bit Adapter�Apply anti-seize lubricant to threads before use�Desgined for Milwaukee Core Bits�Read all tool warnings before useThis core bit adapter from Milwaukee® may be exactly what you need to keep your next project moving. Even the most expensive drills are worthless without the proper drilling equipment. This core bit adapter helps you carry out tough jobs like cutting through concrete, brick, pavers, stone, and more.