Features: Unique design, mixed color crystal for rhinestone. The diameter of each ear studs is 2 mm/3 mm/ 4 mm/5 mm. Great decoration,it will make you more attractive. Stud earrings lightweight, fuss-free, skin-friendly, and easy to maintain and They stay in place and do not get entangled with your hair. Plastic posts suitable for very sensitive ears, so don'for t worry about ears for swell up, allergies and infection. Made of high-grade plastic eco-friendly material, surely lead and nickel free. Some Jewelry Maintenance Tips: Keeping away from chemicals or a showerKeeping away from impacting and scratchingPicking it off when sweating a lot or sleepingWiping with a soft cloth when necessary. Specifications: Item Type:Stud Earrings Material: Crystal for rhinestone & Resin Pins Nickel and Lead free Color: White & Mixed Colors Pattern: Round Crystals Size: Diameter: 2/3/4/5 mm- 0.08"/0.12"/0.16"/0.2" Quantity: 20 Pairs. Package Includes: 20 Pair x Ear Studs. note: 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!