Features Durable Metal Construction - Crafted from high-quality metal, this chuck is wear-resistant and designed to withstand impacts for long-lasting performance Advanced Polishing Technique - Features a polished surface that is anti-oxidative and waterproof, ensuring reliability in various working conditions Precision Engineering - Fine workmanship guarantees stable performance and extends the service life of your tools, providing consistent results every time Convenient Chuck Key Included - Comes with a chuck key for easy adjustment, allowing you to secure your bits tightly and enhance your drilling efficiency Versatile Compatibility - Ideal for use with various machines including drill machines and electric drills, making it a must-have accessory for any DIY enthusiast 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 use, 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 use, applicable for drill machine, electric drill, etc. Specification: Material: Iron Item Type: Electric drill chuck Clamp Range: 0.6-6.5mm Mount Hole: 6mm taper (B10), 3/8-24UNF thread (3/8-24UNF) (Optional) Drill Chuck Size: Height: 4cm/1.57in, hole diameter: 6mm/0.24in Chuck Key Size: 5.5 x 3.3cm / 2.16 x 1.30in Weight: Approx. 126-128g / 4.4-4.5oz Package list: 1 x Drill Chuck 1 x Chuck Key Package List