Please read it carefully. If you don't know what size you should buy, please measure the size of the earphone output port, and then choose the size that suits you.
4mm Filter Suitable for headphones with an aperture of 4mm
This earbuds mesh already had glue on it so you just peel and stick on your headphone voice outlet, mesh filter can change the voice Frequency or Prevent dusty
Package contents: Filter Mesh 10PCS X 1 tweezers X 1 alcohol cotton