Package content : Usb c dust plug, 20packs, black. | Material : Usb c dust plug made of high quality silicone, which is sturdy and durable. | Anti Dust : Protect you USB port from water, dust effectively. | Application : Our anti dust plug have a great effect on protecting the Type C/USB C from dust and oxidation. | "Customers service : We care about your shopping experience and satisfaction. Please feel free to get in touch with us if you have any problem, We’ll do whatever we could do to help. "