Package includes: enough replacement bulbs for mini Christmas lights, enough to replace broken bulbs in your Christmas tree lights and to save the bulb for a rainy day. Size information: the base is 1.09 cm long, 0.76 cm wide at the inserted part of the base, and the bulb is 3.2 cm long, 0.5 cm in diameter. Please check the specifications of your own bulbs carefully before purchasing. Specifications: 2.5 volts, 0.425 watts, 0.17 amps. Mini Christmas lights are made of good quality materials and are carefully inspected and tested by the manufacturer, designed for 50, 100 or 150 lights. How to replace it: First, make sure your light string is unplugged and remove the broken bulb with the base and discard it. Then make sure the two wires from the new bulb are correctly positioned on either side of the base (do not let them cross or touch each other). Then insert the new bulb at the correct angle and make sure it is fully inserted. Finally, reconnect the string to see if you have succeeded. Suitable occasions: our replacement bulbs for mini Christmas lights are excellent for artificial Christmas trees, wreaths and garlands. Perfect for replacing existing bulbs that have broken or become old. Warm tips: if the plastic-coated sleeve does not fit your bulb, use our glass or our wire in your original plastic-coated sleeve.