Description: Made of high quality, safe and environmentally friendly materials, this product is the best choice for people who have allergic reactions to metals. Featuring a smooth surface, light weight, durability, no odor, and hypoallergenic, this product ensures your health while expanding your ears. It is constructed of acrylic material. There are 9 sizes for you to choose: 1.6mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm. It is a great gift for friend and yourself. Item Name: Ear Expander Material: Acrylic Features: Double O-Rings, Flexible, Hypoallergenic Size Details: Style 1 Length: 0.16cm/0.06" (Approx.) Style 2 Length: 0.2cm/0.08" (Approx.) Style 3 Length: 0.25cm/0.1" (Approx.) Style 4 Length: 0.3cm/0.12" (Approx.) Style 5 Length: 0.4cm/0.16" (Approx.) Style 6 Length: 0.5cm/0.2" (Approx.) Style 7 Length: 0.6cm/0.24" (Approx.) Style 8 Length: 0.8cm/0.31" (Approx.) Style 9 Length: 1cm/0.39" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 50 x Ear Expanders It is a great gift for friend and yourself. Made of high quality, safe and environmentally friendly materials, this product is the best choice for people who have allergic reactions to metals. High quality, safe and environmentally friendly materials are used in this product, making it the best choice for people who have allergic reactions to metals. Featuring high quality, safe and environmental protection materials, this product is a perfect choice for those who suffer from allergic reactions to metal. Using high quality, safe and environmentally friendly materials, this product is the best choice for people who have allergic reactions to metals.