Product Description Material: Ceramic Package Contents: 1 grinding kit (7 pieces) 1.【Premium Ceramic Material】: Made of superior ceramic material, these nail art tools are durable, sharp, and long-lasting, and also made with delicate. With excellent heat dissipation, the bits will not get burning hot during long-time use like metal bits 2.【Perfect Drills】: Total 7pcs different nail drill bits, which fit most nail drill machines that use bits, durable for long time use. They could be used for polishing nail surface or even getting into tight areas such as sidewalls and cuticle area. The drill brush bit helps clean and shine nail surface and drill bits 3.【Multifunctions】: Adopt the highest precision standards ceramic with superior strength, sharpness, and durability. Professional shapes and sizes design meet the diversified needs, like nail beautify, nail cleaning, and care. Perfect for refining and shaping nail edges and removing dead skin easily 4.【7 Pcs Nail Drill Bits】: Set with a corn top (coarse grit), large cylinder top (medium grit), ball cylinder top (fine grit), umbrella top (fine grit), needle bit (medium grit), micro ball bit (medium grit), brush drill bit. Suitable for most size shank nail drill machine 5.【Easy to Clean】: Nail drill bits are corrosion resistant, as well as no clogging for nails. Nail Brush Bit can easily clean the dust on the bits or nails, protect the bits after each use, keep you and your client’s nails healthy