6/16pcs Mini Electric Drill Set Handheld USB Drill Rotary Tools Engraver Pen Drilling Jewelry Tools With Drill Bits Power Tool Product Features: 1. Adjustable electric drill: adjustable electric portable DIY hand-held drill, durable and reliable. 2. Clamping range: 0.7-1.2mm quick change chuck makes drilling more convenient. 3. Simple operation: super long power line design, 1.8m operation panel, fully meet the environmental requirements of DIY work, convenient switch, simple operation. 4. Application: resin plastic wood polymer clay hand-held drilling tools, jewelry making key chain pendant earrings, paper, sheet metal, acrylic, aluminum, etc. 5. Please note: Not suitable for heavy metal or high hardne materials. Product Specifications: Material: ABS+ metal Color: Black Dimensions (L x W) : approx. 115x25mm / 4.53x0.98in Power supply voltage: 5V Power supply voltage: 5-6V Power supply current: above 2A Rated speed: 8000rpm No load speed: 8500rpm Rated output power: 10W Clamping range: small 0.7-1.2mm/0.03-0.05inch; Large 2.5 3.2 mm / 0.10 to 0.13 inch Packing list: 6 PCS/set: Small electric drill +3 twist drills +1 wrench +usb cable 16 PCS/set: Small electric drill +10 0.9mm+3 1.1mm (drill) +1 wrench +usb cable