Mudder 100 Count Christmas Tree Lights Replacement Bulbs Mini Incandescent Christmas Lights 2.5v 0.425 Watt Warm Prelit Xmas Tree Decoration(Green Base with and Colorful Bulb)

These looked identical to the bulbs in my 2015 Balsam Hill Tree with the T-lock. These bulbs were very loose in the socket, and only worked when held in tightly. Once I engaged the lock and released pressure holding the bulb in, the bulb would go out. Tried several of these bulbs in different sockets with the same result. The bulbs seem to be good quality, but did not work on my tree. I ended up buying the bulbs only, without bases on Amazon, and they work great.

These lights come with bayonet base and lock tab. Tour "Bayonet" style base can be short, medium, or long (rare these days). These Mudder bulbs come with the shorter bayonet base. One of our trees was a perfect fit with its short base bulbs. Our other tree had the medium bayonet base. No issue--but you have to swap out Mudder's short bayonet base for the one's from your tree. Just unfold the little wires and pull off the plastic base. Then take the medium base and put it on and resend the wires to the sides as it was originally. As to brightness, These Mudders are 2.5V 0.17A bulbs (as written on the package) and matched our tree's brightness. All bulbs worked. We found no duds.

Bulb itself is the same size as my existing bulbs but the base too small. New bulb is extremely loose in the socket and just falls out. Only lights up if I hold it in place and as soon as I let go it doesn't make contact. Only option would be to swap the base on every bulb with existing ones in the tree but in that time I could drive to the store, buy a new string of lights, drive home, and put all new lights on the tree.

The base didn’t fit my tree lights, it was too short. I just removed the burnt bulb and replaced it with the new bulb to the original base. Boom, new lights and colors matched my tree perfectly!

These lights are a high quality replacement for those Christmas lights that black out at all the wrong times! Easy to use and with the 100-count pack you're not going to run out anytime soon!

Didn’t fit older bulbs.

Used these to replace a small section of lights which I have in this huge wreath. You can’t even tell it was changed. Perfect product.

While they look like the same shape (and they fit into the slot almost snug), they will not stay on as you try to lock them in place. You have to tilt and hold for them to come on; let go and they turn off. Slightly off sized. Tried multiple bulbs as I had multiple bulbs out. As the pic is an example of, some are wired wrong (both wires coming out one hole.) Seemed like a good deal, but this 100pk didn't didn't work for me. Maybe you will get lucky

Sadly did not fit

Did not work. I tried multiple lights in the 100 bag and none of them work. I wish the reviews you see now were live when I ordered. I would not have ordered these crappy lights.