Miraclekoo Hypo Allergenic Bullet Clutch Earring Backs with Pad Gold Tone Metal Earplugs, 200 Pieces/100 Pairs Hypo Allergenic;they can be used with gold and silver earrings without causing an allergic reaction Made of soft clear plastic, more comfortable than metal earring backs! 200 pieces; Never worry about losing those earring backs again! 6-7mm long, pad is 11mm wide. It will take about 10-15 bussiness days arrival in USA if it is fulfilled by Merchant. Please choose the suitable shipping as needed , please ignore the Amazon shipping time.