Chip: 4 Watt 395nm Ultraviolet radiation rays ( UV ) 2-chip LED. This bulb fits: Sure fire G2, 6P, Z2, C2, M2; Super fire P60 ( WF-501B ); Ultra fire 501A, Ultra fire C1; Ultra fire 501B, 502B, 503B, Ultra fire L2; Ultra fire C309S; Solor force L2, L2M, L2P, Hugsby C2, C5, C8, remove the outer spring if necessary.
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