8MM Mens Womens Stud Earrings Stainless Steel Plug Screw Back with Black Spike CZ, 2pcs Metal: Stainless Steel Stone: Cubic Zirconia Stone Size: 6.3MM(0.25") Gauge Thickness:1.2MM(0.05") Dimension: 4MM(0.16")thick x8MM(0.31")wide