DescriptionSuitable for protecting the ports, interfaces of desktop computers, PC or laptop. Enough quantity for you to use or replace, easily meet your different need, bring much more conveniences. To prevent the external interface of the computer from oxidized because of moisture.Features-Color: Black -Material: Silicone -Size: 2.00X1.00X0.50cm/0.79X0.39X0.20 in. -Note: 13 pieces per set - Designed to prevent the interface from entering dust or foreign objects. - Easy to install and remove, easy to clean, can be recycled after cleaning and drying. - Durable and sturdy for long-lasting use. Fine workmanship ensures practicality and durability. - Perfect for protecting laptop ports from dirt, dust, liquid and prevention of oxidation rust. - The dust plug is made of silicone, high temperature resistant, and will not be deformed after long-term use.