Specifications: Maglite C Cell Replacement Combo Threaded End CapsSpecifications: Type: 1/2"-28 Anodized Black. Material: High quality 6061 Aluminum NOTE: DO NOT FIT LED and ML versions (Include 3 cell and older type). O-Ring does not include as the picture shows in listing. Maglite C Cell Replacement Combo Threaded End Caps. These are to replace or protect your Maglite Ends. The Battery End is Threaded 1/2"-28 Thread. The Bulb End is Center Drilled.