The chuck securely holds drill bits and resists loosening during operation. Durable construction ensures a long service life, ideal for extended use. Simple to install and remove, offering increased convenience and reduced effort. Clamp size range of 2–13 mm accommodates various drill bit types. Keyless, self-tightening design enhances usability and aligns with ergonomic principles. **Specifications:** - Diameter: 43 mm (1.69 in) - Length: 58 mm (2.28 in), with 3–5 mm tolerance - Connection: 1/2-20UNF - Clamp Range: 2–13 mm (0.04–0.51 in) **Package Includes:** 1 x Drill Chuck **Note:** Verify that your electric drill’s connection thread is 1/2-20UNF before purchase. (1/2-20 refers to thread size: 1/2 inch diameter, 20 threads per inch. UNF denotes Unified National Fine thread standard.)