The Vuda Earrings are the coolest trend in earrings with gold plated triangle studs and gold plated spike jackets. The jacket is adjustable to your ear size and slides on to the back of the post between the ear lobe and earring back.  Approx. size of each earring post: 1/4" x 1/4" and the jacket is 3/4" x 1/2". Lead and Nickel free.