Features High Accuracy Thread and Tapered Holes: Ensures a secure and tight attachment to the tool, providing and reliable performance. Electrophoretic Paint Treatment: The housing is coated with anti- electrophoretic paint, ensuring durability and defence in any environment. Special Anti-Th Bearing: Converts key-applied torsion into superior gripping, enhancing stability and control during use. Specially Treated Clamping Jaws: Improved wear resistance for extended durability and longevity. Superior Accuracy and Durability: Enjoy exceptional precision and long-lasting performance for all your drilling needs. Features: 1、High accuracy thread and tapered holes can be tightly attached to the tool. 2、The housing is treated with electrophoretic paint, making the product anti- even in worst environment. 3、By using special anti-th bearing to convert key-applied torsion into superior gripping. 4、The clamping jaws are specially treated to improve wear resistance. 5、Enjoying super accuracy and durability. Specification: Features: 1. High accuracy thread and tapered holes can be tightly attached to the tool. 2. The housing is treated with electrophoretic paint, making the product anti- even in worst environment. 3. By using special anti-th bearing to convert key-applied torsion into superior gripping. 4. The clamping jaws are specially treated to improve wear resistance. 5. Enjoying super accuracy and durability. 1.5-1m 3/8-24UNF: 1.5-1m denotes that clamp the drill between 1.5 and 1m, and 3/8-24UNF represents a screw hole with 3/8-24UNF at the back of the chuck. Specification: Condition: 100% Material: Stainless steel Clamping Range: 1.5-1m / 0.06-0.51in Package list: 1 * 1.5-1M 3/8--24UNF Drill Chuck 1 * Key 1 * 1/4 Hex 3/8 Threaded Extension Rod Package List