Metal type: Titanium and nickel free / Metal color: WhitenPost / wire size: .031u0026#34; x 3/8u0026#34; Dimensions: 3.0 mm // 4mm // 5mm // 6mmnWeight: 3mm =1.1gm, 4mm=2.8grams, 5mm=3.2gramsn100% Hypoallergenic and Allergy free // For sensitive earsnMade in United States and helps heal pierced ears with allergic reactionsnThis solid titanium earring features a 3,4,5mm or 6mm ball and comes with an ear nut. Made with grade 23 Titanium, this earring is 100% hypoallergenic for sensitive ears and nickel free.