EL Wire End Caps are made to be used with our standard 2.6mm EL Wire. Each order comes with 10 Clear End Caps which is great for all colors of EL Wire. The end cap is meant to be used on the end of your EL Wire so no dust, debris, or water gets inside the plastic tubing. These end caps will fit very snugly around the EL Wire tubing ensuring it doesn't fall off during normal use. To apply, heat up the end of the cap with a heat gun or lighter and slip over the end of the wire. When the cap comes back to room temperature, you will notice a secure fit on the end of the wire.