These 12V mini Christmas replacement bulbs for incandescent string lights are made with a pinched base. This unique shape guarantees a secure fit in most every string light (regardless of whether the pinched base is required or not). 12 volt bulbs are commonly found in short light sets with just 10 bulbs, including tree toppers, lighted angels, novelty lights, and other small decorations. Package includes 20 clear bulbs. Please be sure to reference the tag near the male plug on your light set to confirm both the voltage and the wattage for your string. Voltage, amperes, and wattage must all match the following bulb specifications: 12 volt, 80 mA, 0.96 watt.