Specifications: High-quality material: acrylic \/ silicone. Resistant and long-lasting with good skin compatibility, lightness and color fastness, also absolutely harmless for allergy sufferers. Package content: 25 pairs incl. 50 pieces (9 pairs of stretch rods 1.6 \/ 2 \/ 2.5 \/ 3\/4\/5\/6\/8 \/ 10mm + 9 pairs of acrylic plugs 1.6 \/ 2 \/ 2.5 \/ 3\/4\/5\/6\/8 \/ 10mm +7 pairs of silicone flared tunnel 3\/4\/5\/6\/8\/10 \/ 12mm) Each expansion pin has double rubber-like o-rings. You can select the ones pierced according to your own size with the correct gauge piericng. Good gift for Christmas Birthday Valentine's Day Thanksgiving Classic punk Note: If you bathe, swim, have lunch or sleep at night, then you should remove the piercing. Applicable to people aged 15-50 years. People who are allergic to skin or have skin conditions must be used with caution or even prohibit its use. Characteristics: Great accessory and decoration. Show your special taste and personality. Wonderful gift for you and your friends. Must be disinfected before use