Come and see our amazing products. This cell phone dust plug is made of metal and its size is 0.6 " x 0.6 ". It is designed to protect your headphone jack from dust, liquid, sand and fluff and it's very easy to use. Just plug it in ear jack, then it will prevent dust and debris. Unplug the port when you don't need it. It's a good promotional gift at trade show as your customer would be very happy if you send them this practical item. Price subjects to change without notice, please verify with supplier. Pls confirm further with us if any query about packing info, inventory status and time schedule.