Materials: sheltered from nylon bristles,delicate hand,strong and continuous.the brush head and rose gold body are perfectly connected by alloy.each pen is equipped with a convenient cover,protect the brush heads perfectly. Cleaning and Storage:Before using the brush for the first time, you can soak the brush in water and wash it to soften the brush, it can prolong its use time.Wash it carefully after use, keep it clean for reuse. Fun for nail art design: Suitable for both professionals and beginners, these brushes really help the application of gels or glitter to guide easily. Ideal gifts: Multi-functional nail tool kit is ideal as a gift for your mum, wife and friends on important days, also ideal for nail art enthusiasts, for professional salons and for nail art at home. The 15-piece set contains: 01 Painted Pen ( 6mm), 02 Flower Drawing Pen ( 9mm), 03 Pulling Pen ( 12mm), 04 Function Pen ( 11mm), 05 Checkered Pen ( 6.5mm), 06 Round Tip Petal Pen ( 6.5mm), 07 Flat Tip Row Pen ( 8mm), 08 Slant Tip Halo Pen ( 7.5mm), 09 Flat Tip Halo Pen ( 8.5mm, 10 Round Tip Halo Pen ( 8.5mm), 11 sculpting pen ( 10mm), 12 crystal pen (15mm), 13 floral pen ( 14mm), 14 gradient pen ( 7mm), 15 slant tip halo pen (11mm)