HIGH QUALITY: This adjustable hobby drill features a 3-jaw hardened steel keyless chuck to securely grip small drill bits. The chuck maintains a firm hold after repeated use, preventing bit slippage or dislodgement. It accommodates twist drill bits with diameters ranging from 0.2 mm to 3.4 mm. COMPATIBLE AND USEFUL: The hand drill pin vise holds small drills, deburrers, wires, and reamers. It is suitable for electronic assembly, tool making, and model making. WIDE APPLICATION: This small hand drill is ideal for use on wood, jewelry materials, PVC, walnut, amber, beeswax, olive nut, acrylic, and plastic. NOTE: This is a manual tool, not a power tool. Twist drill bits are not intended for use on hard materials such as steel, iron, or stone. Compact size allows easy storage in a toolbox or pocket. A manual pin vise offers precise control and may be preferred over a power drill for highly accurate drilling tasks—such as watch repair—where minimal movement is critical to avoid damaging sensitive components. Chuck clamping range: 0.5 – 3.4 mm Twist drill bits material: high-speed steel Drill bit sizes included: 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.3, 2.5, 2.8, 3.0 mm Material: alloy Length: 95 mm (3.74 inches) Color: silver & black Package Contents: 1 × Hand drill 30 × Twist drill bits Note: Lighting conditions and display settings may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 mm.