Specifications: Input voltage:110V-240V Speed: 3,000 to 20,000 RPM Frequency: 50/60HZ Size:15.8x2cm/6.2x0.8inch Color: Black Plug Type:USB Charging Multifunction: Our nail drill machine is equipped with 6pcs different style polishing deads,6pcs sanding rings,and 42pcs nail drill bits. You can use them flexibly to polish, engrave and cut your nails or remove cuticle. Six colors for you to choose, just buy and start your nail art work right now! High Quality: The updated aluminum shaft makes the nail polisher more conductive. High quality bearing motor and unique double shock absorber structure make the nail drill machine low voice, smooth and slight vibration when manicure and pedicure. Adjustable Speed: From 3,000rpm up to 20,000rpm of nail file speed. You can easily change the speed by gear button based on your needs and change the grinding head by pressing the snap-type button. Suitable for professional nail Art Salon or personal use. Light Portable: The nail polishing machine adopts an ergonomic pen holder body design and USB charging method, which make it easy to hold on and carry. So that you can do your nail art work anywhere and anytime. Easy to Dissipate: The body of eletric nail grinder is made of ABS material and has two cooling holes. Thus, it has stable performance, long service life and high efficiency heat dissipation. How to replace drills/ pieces? 1.Push on BUTTON while twist counter clockwise until chuck loose. 2.Loose the BUTTON, insert drill tip you choose. (PS: Can't insert in? Keep Step 1) 3.Adjust drill tip length then twist clockwise. PS: Push BUTTON while twist chuck clockwise be able to ensure it fixed well. 4.Once it slips into the slot continue to twist BUTTON to loosen the opening. You will then be able to replace drill bits. --If it doesn't fit right away open up that spindle more the one that you turned and then try setting it in there. --If you turn it the wrong way turn it the other way for a little bit but still hold that BUTTON down and then the Biddle slide in. --Then you tighten it and you release the button and you spin it once around just to make sure that that button can't go down again Package Included: 1 x Electric Nail Drill Machine 1 x Power Cable (USB) 6 x Different Style Polishing Deads 6 x Sanding Rings 12 x Quartz Nail Drill Bits 30 x Bits 1 x Manual Notices: No more than 20 minutes of continuous use each time is recommended. SHIPPING We provide Worldwide Express via EMS (Express Mail Service) on ALL orders. After shipment, you will be informed the tracking No. in time it will take 12-15 working days to USA,And 15-25 business days to other countries. PAYMENT We can only accept PayPal. Thank you. Contact Us If you have any questions with your order or any questions please feel free to contact us.In general we will reply you within 24-48 hours. Please Do contact us before any negative, we will try our best to work it out with the best solution. BUY WITH CONFIDENCE!