Features: Quality,the nail tools are made of safe and reliable tungsten steel materials, with perfect grinding effect and long service life. convenient grinding, high efficiency and stable performance. when used for a long-time, the bit will not be as hot as the metal bit. make nails smoother and easily create the perfect nail art. Suitable for most size 3/32" nail drill machine. suitable for nails,personal manicure pedicure, diy nail art at home.it is fun and happy to apply nails at home with family and friend. Wide range of uses,very suitable for manicure and pedicure, glass, plastic, metal, stone,ceramics, etc, and can be used for natural nails and artificial nails. The perfect gift, this manicure drill bit is the gift for mother female friend,with it, your mother can easily make diy nails or manicures and pedicures. Easy to clean,the tungsten carbide material will not rusty and prevent corrosion. clean and sterilizes drill bits after every procedure. scrub with a brush and rinse with soapy water. Specifications: Material:Tungsten Steel Shank Size:2.35mm/0.09inches(3/32") Package Includes: 1 Piece Nail Drill Bit note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.