Black Crystal Bead 3.5mm Anti Dust Earphone Plug Stopper for Iphone 4 4s HTC Material: Alloy + rhinestone This anti-dust stopper fit most mobile phone and tablet which earphone hole is 3.5mm. Size: (approx)3.5mm for stopper, 9*10mm It makes your mobile phone very fashion and cool. Quantity: 1 pc