Q: ?How about quality assurance after-sales service? A: We are committed to providing customers with high-quality products and excellent services. If you have any questions about product specifications and usage methods, you can contact us if you have not received the package, the products damaged due to the logistics, or you are not satisfied with the product itself, please contact us, we will give you satisfied reply and solution within 24 hours. Looking forward to your purchase and experience of our product Specification: Condition: 100 Brand New Item Type: Nail Grinding Head Material: Ceramics, Tungsten Steel Quantity: 7pcs Optional Type: GH-02, GH-04, GH-06, GH-07, GH-08 Package List: 1 x Set of Nail Grinding Heads(7pcs)Suitable for processing nails, plastic, metal, stone, tiles, ceramics, etc. Adopts quality material, safe and wear-resistant, stable and durable. High working efficiency, good performance, suitable for most kind of nail drill. Can effectively grind and polish your nail, reshape your nail contour. Help remove dead skin and remove nail debris and dirt, make nail clean and tidy. 7pcs grinding heads are available, different function and long service life, enough to satisfy your need. Help remove dead skin and remove nail debris and dirt, make nail clean and tidy. 7pcs grinding heads are available, different function and long service life, enough to satisfy your need.