26 Piece Set: One mini handle and 25 pieces of different size drill bits can meet your different needs, including 0.5mm / 0.6mm / 1.0mm / 1.2mm / 1.5mm / 1.8mm / 2.0mm / 2.35mm High Quality: The hand drill is made of black aluminum alloy with non-slip handle, while the 25-piece drill bit set is made of high speed steel to ensure this drill is ready for hobby and precision work, and helps manage your projects with accuracy Adjustable hand drill: Features 3 hardened steel clamps with claw design, compatible with drill bits from 0.3mm to 3.4mm in diameter. Tension wire with internal thread provides secure fit and stable performance. Durable metallic construction ensures long-term use. Drill bits remain firmly held even after repeated use Versatile hand drill: Suitable for drilling wood, resin, jewelry, nuts, horns, bones, olives, amber, wax, acrylic beads, plastic, PVC, and other materials used in precision home improvement and craft projects. Note: This adjustable swivel clamp is a hand tool and is not intended for use with hard materials such as steel, iron, stone, or glass The hand drill is a manual tool, not a power tool Avoid contact with steel, iron, stone, glass, or similar hard materials Depending on the material surface, it may be helpful to mark the desired drilling location before use