1. Fast Grinding: The surface roughness of the drill bit allows quick removal of nail glue for cleaning, shaping, cutting, smoothing and removal to meet your various needs. 2. Easy to Use: The drill bit can be rotated to the right or left for a smooth clockwise and counterclockwise cut, perfect for both left and right hands without having to change other during work. 3. No Heat: The drill bit is suitable for your nails and artificial nails, all ceramic drill bits are smooth, do not heat, and are heat resistant to prevent overheating damage. 4. Scope of Application: These grinding heads are suitable for most drill nail machines, suitable for most gel nails and for experienced manicurists or beginners in nail art. 5. Professional Nail Drill Bits: With reliable strength, high durability, less dust,drill bit can quickly and well reshape, polish, carve and smooth your gel nails. Spec: Item Type: Nail Drill Bits Material: Ceramic + Stainless steel Package List: 40 xNail Drill Bits 4 x RackProfessional Nail Drill Bits: With reliable strength, high durability, less dust,drill bit can quickly and well reshape, polish, carve and smooth your gel nails. Scope of Application: These grinding heads are suitable for most drill nail machines, suitable for most gel nails and for experienced manicurists or beginners in nail art. No Heat: The drill bit is suitable for your nails and artificial nails, all ceramic drill bits are smooth, do not heat, and are heat resistant to prevent overheating damage. Easy to Use: The drill bit can be rotated to the right or left for a smooth clockwise and counterclockwise cut, perfect for both left and right hands without having to change other during work. Fast Grinding: The surface roughness of the drill bit allows quick removal of nail glue for cleaning, shaping, cutting, smoothing and removal to meet your various needs.