The nail grinder polishing drill set is a safe device that can easily remove hard or soft gel nails and excess cuticles, polish dull nails, and treat calluses. The nail grinder is extremely quiet, has an adjustable speed function, and comes with 6 different drill bits and 6 sanding belts. The drill bits can be easily replaced without tools. Note: After inserting the drill bit, reverse the screw of the drill bit socket to tighten it. The portable and lightweight design allows beginners to use the electric nail drill accurately and safely. You can easily carve, shape, grind, and polish nails without skills and experience. Size: Approx. 4.2*9.7*19.5 cm Color: White With advanced noise reduction motor, the polishing head has almost no vibration during operation to ensure safety. Low heat operation to avoid overheating and damage.