High Quality Ceramic Material: Some of the nail drill bits are made of high quality ceramic material, which is durable, sharp and long lasting. Thanks to the good heat dissipation, they will not burn like metal parts during long-term use. The ceramic can be cleaned and disinfected and will not rust. There is less dust during use, and friction and heat are minimal. High quality tungsten alloy material: Some of the nail drill bits are made of tungsten alloy and are suitable for all kinds of…