612 Vermont

2.5 Volt Mini Christmas Replacement Bulbs for Christmas Trees and Incandescent String Lights, Pinched Base, 100 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 100 clear or 100 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


62 Reviews

  • 4

    Published by Gerald K. on Mar 2nd 2023

    Only last 2 seasons

  • 5
    Replacement Christmas Tree Bulbs

    Published by Greg on Dec 19th 2022

    These bulbs worked out great. I was able to easily remove the old bulbs from their socket and install the new bulbs. The brightness match the original bulbs.

  • 5
    Great service!

    Published by Mike on Dec 19th 2022

    Highly Recommended to buy

  • 5
    0.5 watt Christmas tree replacement bulbs

    Published by CARL Y. on Dec 9th 2022

    612 Vermont is the only bulb supplier that is aware of the different wattages that replacement bulbs come in. Using lower wattage bulbs results in burn out of entire strings.

  • 5
    Replacement Lights

    Published by John K. on Dec 5th 2022

    I love your company. Interaction has been tremendous. Product is exactly what we needed. Hope your company is around for a long time.

  • 5
    Mini replacement bulbs

    Published by BB on Nov 27th 2022

    So nice to have found pinched base bulbs with correct voltage/amps. Easy order and quick delivery.

  • 5
    Great Product

    Published by Marcy on Oct 26th 2022

    Great product and even better customer service. My 100 count of bulbs was 3 bulbs short…. I emailed the company and they sent me an additional 50 count of cost to me within a couple of days. I would highly recommend this company for your hard to find items.

  • 5
    100 Clear Mini Replacement Bulbs 2.5V, 170mA

    Published by LB on Oct 13th 2022

    This is my second order of these replacement bulbs, these are the cheapest I've found, much cheaper than buying those little cards with only 5-10 bulbs each. Replacing bulbs in my many light strings, wreaths, and garlands is many times cheaper than tossing them and buying new (which makes me feel so wasteful). I look for and replace burned out bulbs before I put up the lighted items and before I put them away after Christmas. Replacing bulbs one at a time is exponentially easier than allowing an increasing number of burned out bulbs to eventually (and always suddenly) burn out the whole set, where you then either then have to toss or replace ALL of the bulbs.

  • 5
    100 Clear replacement bulbs

    Published by Betty on Sep 4th 2022

    They work perfectly so far. Delivery was prompt and the ordering was easy. Would I recommend..Yes!

  • 5

    Published by Lyle W. on May 10th 2022

    Was able to order easily and found what I needed with good delivery

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