【Diamond Grinding】These diamond nail grinding bits are very strong and durable, and they are universal for all types of professional manicure jobs such as engraving, grinding, milling, sharpening, sanding, polishing, etc. The diamond bits are suitable for natural and artificial nails. 【19*3/32\" Bits】Our nail drill bit set contains a total of 19 different nail bits, which fit most drills that use 3/32\" (2.35 mm) bits. The different shapes of the grinding heads have different grinding effects. 【Multiple Uses】 Diamond nail bits are the perfect tool for nail art. They can be used to polish the nail surface and even penetrate into the sidewalls and cuticles. Brushes for narrow areas such as drills help to clean and brighten the nail surface and drill bits. It is an essential bit set for both beginners and professionals. 【Colorful Bits】All nail drill bits have a colored plating process on the surface and will almost never lose their color. This makes your manicure tools look even more beautiful and puts you in a good mood when working on your nails.