Review on 📶 DiCUNO Extender Adjustable Extension Converter: Boost Your Device's Range with Ultimate Flexibility by Andrew Kay

They are quite reliable if you use a bulb up to 5 oz, they have a "tough" look for a Chinese product, like all others feel much cheaper. I wouldn't use it for a heavy bulb. I ended up not needing it because I used a Gloe bug repellent bulb which turned out to be useless. Worth buying.