1,COMPATIBLE AND VERSATILE: Easily connect a 10mm diameter round shank to a 1/2 inch threaded adapter for drill chuck, expanding your drilling options for different applications. 2,RELIABLE AND EFFICIENT: This adapter allows you to effortlessly connect your drill machine to a ground drill, ensuring a secure and precise connection for efficient drilling. 3,SECURE CONNECTION: For added safety and stability during reverse motion, you can apply thread lock adhesive on the screw that holds the two parts together to ensure a reliable connection. 4,EXPAND YOUR CAPABILITIES: By connecting this adapter to a drill bit, you'll have a versatile tool with 3 interchangeable drill bits, perfect for tackling various garden drilling tasks with ease. 5,PERFECT SIZE: With a total length of 1 inches and a main body diameter of 3/4 inches, this adapter is compact yet sturdy, making it easy to handle, store and use. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.