Try the The Filter Connection at: http://www.2filter.com/welcometo.html They offer Series 7 retaining rings and screw in filters at a large variety of thread sizes including most sizes needed for Leica lenses and lens hoods. ------ Unsubscribe or change to/from Digest Mode at: www.horizon.bc.ca/~dnr/lrflex.htm Archives are at: www.freelists.org/archives/leicareflex/