0.6‑6.5mm Mini Key Type Drill Chuck with Chuck Key for Electric Power Drill (B10) Features: 1. Cast by metal, wear resistant and anti-impact. 2. Polishing surface features anti-oxidative, waterproof and anti-corrosion. 3. Fine workmanship ensures its stable performance and long service life. 4. Equipped with chuck key to adjust the chuck to proper tightness. 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