HeroNeo&reg; 10pc Easy Connector Male For LED Strip Light Lamp 3528 5050 Adapter Power Supply Screw terminals (for open wire leads), suitable for single color LED strip! With this item you don't need to solder! Easy, cheap and fine! Perfect for connecting the LED power supply with Strip! Or working with female connectors! Internal Diameter: 2.1mm External Diameter: 5.5mm