400 Plastic, Rubber Ear Nut Clutches, Earring Backs, TWO Styles, Firm Daisy Shape, Soft Bullet Cone Style Two Styles include the popular bullet/cone shape (soft) and the Daisy Shape (firm). Work better than metal Quantity: Approximately 400 (FOUR HUNDRED) pieces, 200 each Style Tiny Rubber Ear Backs are perfect for keeping those earrings on your ear as well as backs for your post earrings. Size: Daisy-4mmx 2.5mm, Hole:1mm; Bullet/Cone-4mmx4mm, Hole: .5-1mm (approximate) Draw the measurements with a ruler and refer to additional pictures to assist with size. Earrings (not included) demonstrate size/use.