This rubber ring from LedLenser (M7R B7,L7,M7,MT7,M8,P7,T7) is intended for this brand and is of original quality. This is always appropriate. LedLenser is a Zweibrüder brand. They manufacture a wide range of torches, headlamps and diving lamps featuring the latest LED technology as well as, in most cases, the Advanced Focus System, one of the best focusing systems available.