What you get - Aluminium alloy pin vise hand drill with 10pcs mini twist drill bits in 5 different sizes 0.8mm, 1.4mm, 1.8mm, 2.4mm, 2.8mm Keyless 3 Jaw Chuck Design - Adjustable pin vise head easy to clamp firmly the drill bit of diameters as 0.2-3.4mm(1/64--9/64 inch), satisfy all you demand. Multipurpose - Portable hand drill can be applied to drilling and engraving the wood, jewelry, walnut, amber, beeswax, olive nut, beads, PVC, acrylic and plastic, etc Compatible Useful - The pin vise can tightly hold small drills, deburrs, wires, reamers; Ideal tool for electronic assembling, tool-making, model making Please Note!! Small pin vise is a manual drill tool, not a power tool; Micro twist drill bits set can't fit to hard things such as steel, iron, stone. Specifications: Pin Vise Hand Tool Material: Alloy Color: Black Length: 95mm/ 3.74 inches Chuck Clamping Range: 0.2-3.4mm(1/64-9/64 inches) 10pcs Mini Twist Drill Bits Material: High-Speed Steel Diameter: 2pcs x 0.8mm, 2pcs x 1.4mm, 2pcs x 1.8mm, 2pcs x 2.4mm, 2pcs x 2.8mm Package included: 1 x Hand Precision Pin Vise 10 x Mini Twist Drill Bits