Specifications:

1.LEDs

• LED Size : 3 mm
• LED  Colours: Red, Yellow, Blue, Green, White (COLD), Warm White, Orange, RGB, Pink, Purple
• Forward Voltage (V): 5V to 12V/DC (brightness will vary with voltage)
• Forward Current: ~20ma at 12V
• Life Rating: 100,000 Hours

2. Holder

• Holder mount hole: ~6mm
• Holder Colour: Black 

3. Wire

• Wire Length: 20cm
• Black Wire is (-)
• Red Wire is (+)