Material: High quality acrylic acid and silica gel, non-toxic and non allergic. It is light, very flexible, safe and healthy to wear.The plug is almost free of dents, so the o-ring will not fall off too easily. The tapered part is made of acrylic and is equipped with 2 o-rings to fix it in placeThis ear set includes three styles: acrylic tip, acrylic UV segment and acrylic snail ear. Dimensions: 1.6, 2, 2.5, 3, 4, 5, 6, 8, 10 mm, a total of 9 sizes, each size is a pair (two). A package includes 54 ears in total, and each style is packaged in an OPP bag.18 acrylic cones with double O-rings - 14G=1.6mm, 12G=2mm, 10G=2.5mm, 8G=3mm, 6G=4mm, 4G=5mm, 2G=6mm, 0G=8mm, 00G=10mm.