Features: Quality,the nail tools make from safe and durability tungsten steelmaterials,with perfect grinding effect and long service life. convenient grinding,efficient and stable. when used for a long time make nails smoother and easily create nails art. Suitable for most size nail drill machine. suitable for nails,personal manicure pedicures,nails art home.fun and happy to apply nails with family and friend. Wide ranges of uses,very suitable for manicure and pedicures, glass, plastic, metal, stone,ceramics, etc, and can be used for natural nails and artificial nails. Gift,this manicure drill bit is gift for mother female friend,with it, your mother can easily make nails and manicures and pedicures. Easy to clean,the tungsten steel materials will not rusting and prevent corrosion. clean and sterilizes drill bits after every procedure. scrub with a brush and rinses with soapsuds. Specifications: Material:Tungsten Steel Color:1,2,03,4,5,6,7 Package Includes: 1Piece 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.