Fine transaction, fast ship, would use again. I didn't notice the 50mm length was too long for my flashlights, but then found that the top simply pops off, leaving the correct length. The contact below it is slightly different, loose but held well enough by the battery, and in need of a protruding dimple, easy to make by removing the contact, placing it topside-down on a piece of pine, and tapping a smaller Philips screwdriver into the center of its underside.