Specification: Color: Pink Size: 12 Size Shank Diameter: approx. 2.5mm Weight: approx. 77g Material: Ceramics Grinding Head+Stainless Steel Shaft Package Including: 12pcs/set Nail Art Tools Feature: These bit ends are easy and safe to use on both: natural and acrylic nails. ideal for private and professional use. Perfect accessory for any professional salon or home. How to use: 1.Rotary grinding machine handle switch, insert the grinding head, twist back the switch. 2.Turn on the grinder switch, adjust the speed. 3.Polishing nails. Precautions: 1. Handle must not be idling, must be fitted with a needle. 2. The grinding head will gradually wear, please remove the old grinding head, replace the new grinding head. 3. Keep the safe distance that children can not touch. 4. Please keep the environment clean. 5. Use goggles to prevent the use of dust and dandruff generated into the eyes. Note: Due to the difference between different monitors,the picture may not reflect the actual color of the item.We guarantee the style is the same as shown in the pictures.