HIGH QUALITY: This adjustable hobby drill features a 3-jaw hardened steel keyless chuck that securely grips small drill bits. The chuck maintains a firm hold after repeated use, preventing bit slippage or dislodging. 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 ideal for electronics assembly, tool making, and model making. WIDE APPLICATION: Suitable for drilling in 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 suitable for hard materials such as steel, iron, or stone. Compact size makes it easy to store in a toolbox or pocket. A manual pin vise offers precise control and is often preferred over power drills for highly accurate work, such as watch repair, where even minor slips or impacts could damage 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 and black Package Contents: 1 × Hand drill 30 × Twist drill bits Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 mm.