CrazyPiercing Stainless Steel Mens Womens Hoop Earrings Piercings Huggie Hypoallergenic (4 Pair) Material: Stainless Steel. Color:Black,Gold,Silver,Blue,1 pair for each color ts special design will make you look unique. pin diameter : 1mm/0.039"(approx.); about 9x10mm/0.35*0.39" for the inside circle, 13mmx13mm/0.51*0.51" for the outside circle CrazyPiercing is a trademark protected by the US Trademark Law. CrazyPiercing products are sold by authorized sellers only Material: Stainless Steel. Color:Black,Gold,Silver,Blue,1 pair for each color special design will make you look unique. pin diameter : 1mm/0.039&#034;(approx.); about 9x10mm/0.35*0.39&#034; for the inside circle, 13mmx13mm/0.51*0.51&#034; for the outside circle.