I bought the LED for my MagLite 6D. Since this is a more than 10-year-old model, it still works perfectly, I wanted to make a low-cost migration or upgrade to neudeutsch LED. Since you can not complain at the price I slammed. Full of expectations with what bright light my old MagLite would shine equal I grabbed the lamp and tried to immediately inserting. But now the rude awakening, it does not fit into the socket. The lower part of the LED is significantly thicker than that of the original incandescent lamp (good 1mm in diameter). While the bulb still play as amended had the LED does not fit. A closer look, I noticed that at the bottom of the LED is a small bead and it is this it prevents the LED fits into the socket. Disappointed, I broke off the upgrade. A few days later I looked at the matter once again and chose the metal file before zuholen and file off the bead. Lo and behold, after a few down the file matched the LED into the socket (sitting still very tight but no matter). And now reassembled quickly MagLite and ... amazed how nice and bright the good old MagLite shines again.
The power of the LED light will go for the price fully in order and is an affordable solution to switch to LED. When the matter of the fit would not have been, I would have given 5 stars.