Features Versatile Adapter Functionality: Easily convert your electric hammer into a powerful drill with this innovative adapter, enhancing your tool's versatility for various tasks Secure Grip Design: The classic keyed 3-jaw design ensures a firm hold on a wide range of twist drills, providing confidence and stability during operation Precision Clamping Range: Features a 1.5" to 1m clamping range with 1/2"-20UNF mounting threads, allowing compatibility with diverse drilling needs and ensuring easy installation Enhanced Torque Transfer: Specialized anti-th bearing technology effectively converts key-applied torque into superior gripping power, maximizing your drilling efficiency Durable Wear Resistance: The clamping jaws are specially treated to improve wear resistance, ensuring long-lasting performance and reliability for all your drilling projects Features: 1、The adapter allows this drill chuck to mount on electric hammer so as to convert electric hammer into a power drill. 2、Classic keyed 3？jaw design securely holds a wide range of twist drills conveniently. 3、1.5？1m drill chuck clamping range, 1/2？20UNF mounting threads at the back of the chuck. 4、By using specialized anti？th bearing to convert key？applied torque into superior gripping. 5、The clamping jaws are specially treated to improve wear resistance. Specification: Features: The adapter allows this drill chuck to mount on electric hammer so as to convert electric hammer into a power drill. Classic keyed 3-jaw design securely holds a wide range of twist drills conveniently. 1.5-1m drill chuck clamping range, 1/2-20UNF mounting threads at the back of the chuck. By using specialized anti-th bearing to convert key-applied torque into superior gripping. The clamping jaws are specially treated to improve wear resistance. All metal construction for long durability. Specification: Material: Steel Clamping Range: 1.5-1m Mounting thread: 1/2-20UNF Package list: 1 x Drill Chuck 1 x Key 1 x Square Shank Adapter Package List