Features 【Fixed installation】: Our drill chuck can firmly fix the drill bit and is not easy to loosen. Practical tools greatly reduce your work fatigue and bring you a fast and accurate work experience. 【Premium Material】: Our drill chucks are made of strong industrial grade materials, durable, corrosion resistant and long service life, suitable for long working hours. 【High Precision】: This keyless chuck has high precision, the three-jaw chuck is of excellent workmanship, and the built-in spring is stable and durable. Holding these tiny bits more rely and better aligned with the rotation of the tool not only maintains stability at high speeds, but also improves work efficiency. 【Universal size】: The size of the fixture is large, ranging from 1~13mm, and the replacement of the drill chuck is suitable for a variety of drill bits. Connection size: 1/2-20UNF. 【Easy Installation】: The keyless self-tightening design is ergonomically designed. Easy installation and disassembly, more convenient and labor-saving. Multi-purpose chuck, keyless hand drill chuck 1/2-20UNF installation 2~13mm multi-purpose self-tightening drill chuck, replacement drill chuck rotary tool replacement kit. feature: 1. Our drill chuck can firmly fix the drill bit and is not easy to loosen. Practical tools greatly reduce your work fatigue and bring you a fast and accurate work experience. 2. Our drill chucks are made of sturdy industrial-grade materials, durable, corrosion-resistant, and have a long service life, suitable for long-term work. 3. This keyless chuck is of high precision, the three-jaw chuck is of excellent workmanship, and the built-in spring is stable and durable. Holding these tiny bits more rely, and better aligned with the rotation of the tool, not only maintains stability at high speeds, but also improves work efficiency. 4. The size of the fixture is wide, ranging from 1 to 13mm, and the replacement of the drill chuck is suitable for a variety of drill bits. Connection size: 1/2-20UNF. 5. The keyless self-tightening design is ergonomically designed. Easy installation and disassembly, more convenient and labor-saving. Specification: Diameter: 43mm/1.69" Length: 71mm/2.8" Connection size: 1/2-20UNF Clamping range: 1 ~ 13mm / 0.04 ~ 0.51in packing list: 1* drill chuck Package List