Bests & Worsts Reviews from Amazon

This blanket statement in the (sparse) description & title is very misleading: "Fits MagLite 4-6 cell flashlights". Not true. Older C/D cell mag-lites use a traditional incandescent bulb that looks very similar to a traditional screw-in light bulb. More precisely, they're miniaturized versions of the bulbs you put into car turn-signal enclosures or brake lights. HOWEVER, the newer C/D cell mag-lites now use the same type of bulbs you find in the mini-mag-lites, like the single double-A or triple-A battery types. These bulbs are essentially a formed piece of glass with 2 stiff & straight wires sticking out the bottom. You insert the bare wires into 2 sockets on the flashlight to replace the bulb. The end result is that these LED upgrades WILL NOT WORK in the newer C/D cell flashlights, as the retaining collar will not hold down the bulb in its enclosure. It's sized for the older incandescent bulbs. I wish there was something in the description or title that clearly stated that. At this point, the return shipping for this item is about 1/3 the cost of the product, so it's not worth my time & effort to go through the trouble.