Sterling silver plated Horseshoe Crab Earrings dangle from solid sterling silver petite hoops. Hoop diameter 1/2 inch. Actual length of horseshoe crabs 3/4". Semaki & Bird Horseshoe Crab hoops are made in U.S.A. The earring hoops are delicate which may make them more difficult tp put on. If you have trouble inserting earrings, you may want the horseshoe crab dangle earrings with french wires.