About this item One truth about working: you always need the cable or adapter when you don't have it in your toolbox. That's why these terminal-block audio connectors are a great choice. No soldering required! Use stranded or solid core wire and a small screwdriver to create custom wiring jigs. Connect single wires with open cable heads to your 3.5mm mono jack. Reliable connection, good performance with plastic construction and strain relief. It is more convenient to use quickly without welding. Use for earphone plug. Dimensions: 4 x 3 x 0.5 inches.