Replacement flash tube for phottix indra500 ttl monolights committed to cutting edge innovation and excellence in photographic accessories the phottix track record speaks for itself holder of 40 patents phottix achieved acclaim for its award winning phottix odin ttl flash trigger the first trigger to feature full ttl and manual power and flash zoom control the revolutionary phottix mitros ttl transceiver flash built a radio ttl flash trigger and receiver into a hot shoe flash in the las