612 Vermont

2.5 Volt Mini Christmas Replacement Bulbs for Christmas Trees and Incandescent String Lights, Pinched Base, 200 Count

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• 2.5 volt mini replacements bulbs for incandescent Christmas lights
• Pinched base shape fits most light sets
• Value pack includes 200 clear or 200 multi bulbs
• Multi assortment includes Red, Green, Blue, Yellow, and Amber
• Available in 3 different wattages including 0.42 watt (170 mA), 0.5 watt (200 mA), and 0.25 watt (100 mA)
• Please, check the white tag near the plug to confirm bulb specifications

These 2.5V mini Christmas replacement bulbs for incandescent string lights are made with a pinched base which means that they will fit most light sets (whether a pinched base is required or not). 2.5V lamps are very common for string lights with 50 or more lamps, however it is very important to confirm the amperes (or wattage) for your particular light set to be sure that you get the correct brightness. We offer the following three options for 2.5 volt lamps:

170 mA (0.42 watt): These are the most common 2.5 volt mini replacement bulbs used now-a-days and are intended for use with incandescent string lights that require 0.42 watt lamps. These lamps will shine nice and bright in light sets that recommend between (0.41 – 0.44 watt lamps).

200 mA (0.50 watt): These 'high wattage' replacement bulbs are for use with incandescent string lights that require 0.5 watt lamps. These string lights are fairly common and have been the standard for certain brands, most notably GKI Bethelem. The 0.5 watt bulbs are intended to be brighter than traditional 0.42 watt lamps, however, if you use these lamps in a light set that requires a lower wattage, they will often glow dim. It is important to double check the wattage (or amperes) required for your light set before purchasing.

100 mA (0.25 watt): These lamps are intended ONLY for incandescent string lights that require low wattage or energy saver light bulbs. This wattage is not common, but it has been used on different light sets and decorations for years. Most light sets of this nature will specifically state that you need to use 100 mA bulbs (or 0.25 watt) bulbs as replacements. This is typical of light sets termed heavy duty and it most commonly found on sets of 200+ lights or icicle light sets. If you use these replacement bulbs in light sets that require higher wattage lamps, these lamps will flash and burn out immediately. It is important to double check the wattage (or amperes) required for your light set before purchasing.

These 2.5 volt replacement bulbs are sold 'naked' which means that they do not come with any plastic husk. Please be sure to keep the plastic husk that the old bulbs are removed from so that these will incorporate into your string light. The unique pinched base shape to these bulbs allows them to set fully down inside of most any husk to make meaningful contact with the brass contacts inside.

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 to ensure that the lamps will light with proper brightness.

If you have any questions, or need help troubleshooting, please feel free to give us a call at 1-877-750-0971. We can also be reached through the contact us form on our website.

Bulb Dimensions:
Length of glass - 7/8 inch
Length of wire - 3/8 inch
Diameter of glass - 5 mm


prop-65-warning-6-pt.png WARNING: This product can expose you to chemicals including lead, benzene, and cadmium, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.  Wash hands after use.  For more information go to

Additional Details


21 Reviews

  • 5
    Reliable bulbs; good price

    Published by Steve M. on Dec 12th 2023

    Reliable bulbs; good price. I have bought them before and I will buy them again.

  • 5
    612 is the only store to have them in bulk. You are very lucky if you can find the bulbs anywhere else!

    Published by Daniel B. on Dec 11th 2023

    The bulbs always work!

  • 5
    2.5 volt bulbs

    Published by Randall R. on Sep 13th 2023

    These bulbs were what I needed to get my Christmas lights working, Different string lengths require different voltage bulbs and 612 Vermont has all the different sizes. They even sent a few extras.

  • 5
    Replacement bulbs

    Published by Unknown on Sep 13th 2023

    The replacement bulbs were exactly what I expected and they even sent a few extras. Thanks for the bulbs !!

  • 5
    2.5V Mini Replacement Bulbs

    Published by LBee on May 12th 2023

    To try to avoid having to toss many Christmas light strings, and lighted garlands and trees - have internet-learned about the importance of replacing bulbs as soon as they burn out, otherwise you will quickly end up having all the bulbs in the string burn out. After replacing every bulb on an expensive 50-light garland and having to cut out a mile of lights from a lit Christmas tree, now I go around all holiday season replacing burned out bulbs when I see them to keep the entire string from burning out. On my third box of these bulbs, all have worked when installed. Many, many times cheaper than buying those cards of 5-10 bulbs at Christmastime for $5-6. HINT: before you pull a bulb for replacement, mark the socket with a clothespin or anything easily visible - it’s incredibly easy to lose your place when you look away!

  • 5
    I had a difficult time finding the correct bulb type and Vermont 612 helped me chose the correct one.

    Published by Peter T. on Mar 16th 2023

    Vermont 612 helped me chose the correct one. High quality at a fair price.

  • 4
    Christmas Replacement bulbs

    Published by Unknown on Feb 10th 2023

    Vermont had what I needed and I received them in a timely manner

  • 2
    Clear Mini Light Replacements

    Published by Mike on Jan 24th 2023

    The 200 pack arrived earlier than expect and were as advertised. However, in using the bulbs there were at least 10 that were broken that I ran across. I didn’t even open the second bag yet

  • 5
    Mini Christmas replacement incandescent bulbs

    Published by RedHen on Jan 23rd 2023

    These particular replacement bulbs with the correct specs (2.5 volt, .25 watt) are very hard to find. This seller had what I needed and shipped my order quickly, and they were easy to install but more importantly, they worked!

  • 4

    Published by Roger H. on Jan 13th 2023

    Very satisfied with product. Experienced a failure rate of around 5-6 percent (ie : incomplete bulbs) Not complaining, but since you asked I wanted to let you know. It would be difficult to keep that from happening. I understand. No correction necessary. Thank you for your service.

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