Features Durable Metal Construction: Crafted from high-quality metal, this drill chuck is wear-resistant and impact-proof for long-lasting performance under tough conditions Advanced Polishing Finish: Features an anti-oxidative and waterproof surface, ensuring reliable use in various environments without corrosion or damage Precision Engineering: Fine workmanship guarantees stable performance, enhancing the accuracy of your drilling tasks and extending the tool's service life Convenient Chuck Key Included: Equipped with a chuck key for easy adjustment, allowing you to achieve the proper tightness quickly and securely for optimal results Versatile Compatibility: Designed to easily mount on most drill machines and electric drills, making it a perfect addition to your toolkit for all your drilling needs Features: 1、Cast by metal, wear resistant and anti-impact. 2、Polishing features anti-oxidative, waterproof and anti-. 3、Fine workmanship ensures its stable performance and long service life. 4、Equipped with chuck key to adjust the chuck to proper tightn. 5、Easy to mount, applicable for drill machine, electric drill, etc. Specification: Features: 1. Cast by metal, wear resistant and anti-impact. 2. Polishing features anti-oxidative, waterproof and anti-. 3. Fine workmanship ensures its stable performance and long service life. 4. Equipped with chuck key to adjust the chuck to proper tightn. 5. Easy to mount, applicable for drill machine, electric drill, etc. Specification: Material: Stainl steel Item Type: Electric drill chuck Clamp Range: 3-16mm Mount Hole: 16mm taper (B16), 18mm taper (B18), 1/2-20UNF thread (Optional) Drill Chuck Size: Height: 6.5cm/2.56in, hole diameter: 1.6cm/0.63in Chuck Key Size: 9*4.8cm / 3.54*1.89in Weight: Approx. 575g/20.3oz Package list: 1 * Drill Chuck 1 * Chuck Key Package List