These are silicone earring backs with thin holes, designed for metal posts. They are not suitable for resin posts. Help prevent the loss of your earrings! - - Other Products - - ▷ #kyunpierce ◁.。 60 pieces: ¥450 80 pieces: ¥600 100 pieces: ¥750 120 pieces: ¥900 For quantities larger than this, please inquire. #handmadeaccessories #handmadeearrings #swarovski #preciosa #singleearring #siliconeearringbacks