Item Name : Carbide Nail Bit head diameter : as picture head materal : Carbide Drill Bit Package List : 1 PCS* Carbide Nail Bit 1) 2.35mm (3/32 inch) shank diameter, our drillbitfit for most electric m anicure machines on the market. 2) Check nail bits before use, if it's broken, do not use. 3) Always wear eye-protective safety glasses, avoiding the chippings to hurt your eyes. 4) For professional use only. 5) If the bits drop down, please check whether it's broken or not. if it's broken, for safety, do not use 6) Keep out of reach of children. 7) Disinfect nail bits after use. Shipping: Items will be shipped within 1-3 business days after we receivedyour payment. Delivery date: InNormally ,the item shipping need takes abou 20-60 days to your country,If you cannot wait for that long, please choose other shipping ways, like EMS/ FedEx/ UPS/ DHL. Return & exchange: All items will be checked and packagedin good condition before shipping. We will try our best to satisfy all our customers. If for any reason you are not satisfied, you may return the item to us under the original condition within 7 days of receipt for a refund or an exchange. We will refund toyou after receiving the returned items. Buyer will pay for the shipping cost for returning the items. Feedback: Please leave a positive feedback with 5 stars when you satisfied theitem and our Service..and please don't leave a negative feedback before contact with us .we alwaysSolve the problems for buyer by friendly.