I don't really like halogen bulbs, but I don't want to bore you with the details. Long story short I've used 3 out of 10 and they all work great! They fit well into my base cabinet lighting without any problems. Just visit Dollar Tree ahead of time and purchase a pack of disposable gloves needed to handle all halogen lights. This rating is presented on November 20, the day of the lamp replacement. If the bulbs blow out prematurely I'll update here. Otherwise, you can simply deduce their shelf life based on the date.