Feature Highlights: 1. 8-Piece Precision Chuck Kit – Includes collets for drill bits ranging from 0.5mm to 3.0mm, perfect for detailed drilling in materials like ABS board, aluminum sheet, and cardboard. 2. Durable Copper Construction – Made from solid copper for reliable strength and excellent workmanship, ensuring long-lasting performance. 3. Compact & Handy Design – Each chuck measures just 27.5 x 9.3 x 6mm, making it easy to store and ideal for portable use as a mini hand drill. 4. Easy to Use & Versatile – Simply match the collet with a twist drill to create a handy mini drill for light DIY tasks and hobby projects. 5. Complete Ready-to-Use Set – Comes with everything you need: 4 copper caps, 4 hex wrenches, and collets in five sizes (0.5mm, 1.0mm, 1.5mm, 2.5mm, 3.0mm). Product Details: This copper miniature drill chuck set is built for precision and durability. The high-quality copper collets work with twist drills to form a compact hand drill, suitable for drilling into ABS board, thin aluminum, paperboard, and similar materials. The kit is designed for easy setup and use—just pick the right collet, attach your drill bit, and you’re ready to go. Perfect for small repairs, modeling, crafting, and other detailed work. Specifications: - Quantity: 8 pieces - Collet Size Range: 0.5mm–3.0mm - Material: Copper - Item Dimensions: 27.5 x 9.3 x 6mm - Package Includes: 4 x Chucks, 4 x Copper Caps, 4 x Hex Wrenches, 4 x Collets (0.5mm, 1.0mm, 1.5mm, 2.5mm, 3.0mm each) Important Notes: - Keep small parts away from children. - Store properly after use to avoid loss. - Safety goggles are recommended when drilling. - Slight color variations may occur due to lighting and screen differences. - Allowable size tolerance: +/- 1–3mm.