This drill chuck is compact and convenient for carrying and storage. It offers wide compatibility with most rotating tools, such as miniature electric drills and electric grinders. Multiple specifications are available, allowing you to select the right option based on your application needs. Installation is simple and time-efficient. Constructed from metal material, it ensures durability and long-term use. The drill chuck measures approximately 16mm in length. Suitable for use with drill bits, power drills, rotary tools, and more. Item Name: Drill Collets Material: Metal Color: Golden Features: Compact design, easy installation, widely applicable Specifications: 1: M8 Nut and 4.8mm Tail Diameter Drill Collets 2: M8 Nut and 4.2mm Tail Diameter Drill Collets 3: M7 Nut and 4.8mm Tail Diameter Drill Collets 4: M7 Nut and 4.2mm Tail Diameter Drill Collets Reference Clamping Range for Electric Grinding Copper Chuck: - 0.5mm Copper Chuck: 0.3–0.6mm - 0.8mm Copper Chuck: 0.6–0.9mm - 1.0mm Copper Chuck: 0.8–1.1mm - 1.2mm Copper Chuck: 1.0–1.3mm - 1.5mm Copper Chuck: 1.3–1.6mm - 1.8mm Copper Chuck: 1.6–1.9mm - 2.0mm Copper Chuck: 1.7–2.1mm - 2.4mm Copper Chuck: 2.1–2.5mm - 3.0mm Copper Chuck: 2.6–3.0mm - 3.2mm Copper Chuck: 2.9–3.2mm Size Details: Length: 1.6cm / 0.6" (Approx.) Note: Due to variations in lighting and screen settings, the actual color may vary slightly from the images. Slight dimensional differences may occur due to manual measurement. Package Includes (choose one set): Set 1: 1 x M8 Nut, 10 x 4.8mm Tail Diameter Drill Collets Set 2: 1 x M8 Nut, 10 x 4.2mm Tail Diameter Drill Collets Set 3: 1 x M7 Nut, 10 x 4.8mm Tail Diameter Drill Collets Set 4: 1 x M7 Nut, 10 x 4.2mm Tail Diameter Drill Collets