【Only Compatible with】 - POLAMD Electric Manicure Pedicure Set | 【Multiple Function】 - This nail drill bit is perfect for natural nails. It can thin thick fingernails and toenails, and remove calluses and dead skin on hands and heels. | 【Long Lasting】 - Made of superior quality stainless steel and plastic, this nail drill bit is very durable. | 【Package Content】 - The package will come with a sapphire cone. | 【Friendly Customer Service】 - Your satisfaction is our priority. We offer 24 hours customer service. If any problem or question, please feel free to contact us.