Introducing the amazing UY2 Butt Connector! This dual-port, dual-blade connector is ideal for connecting two telephone lines, data signal cables, and other conductors. Suitable for 0.4mm-0.9mm wire diameter, plastic shell, copper-plated tin sheet, filled with silicone oil inside, showing a charming yellow color. With 2.08mm insulation, this butt connector is very reliable and secure when joining wires together. Using the UY2 Butt Connectors couldn't be easier - first you twist a pair of continuous twin wires once before securing them at the 19mm ends so you don't damage their insulation. Next grab the connector and make sure its button is facing down, then insert both ends along its port until it reaches the bottom; after that press firmly with the pliers and it will make a firm connection between the cables or conductors of your choice - make sure everything is connected every time All safe and tight! The UY2 easily meets professional standards with its solid build quality, ensuring the connection remains secure over time; in short, this incredible technology offers users an efficient way to quickly connect two wires, No hassle or hassle - making it perfect for anyone looking for convenience and safety when dealing with wire projects!