The Caplugs EC14-DUSTCAP is a plastic dust cover designed to cover the outside of metric threads. It is available in both black and white, and is made of a durable polyethylene material. This dust cover can help protect the threads from environmental elements such as dust, dirt, and other debris. It has a smooth and clean finish, which allows for easy installation or removal. This dust cover is widely used in industrial and automotive industries, as well as in home or office settings.