I found these in my toolbox and IIRC, these attach the tube ring from TV OTAs (mine was a TV-85) to Telepod mounts. Look like brass inserts about 1/2" deep into black plastic knobs that perform like wing nuts. I know, this a lousy description, sorry. If you think you can use these let me know and I'll send them to you, no charge. All I ask is that if you can't use them, try to pass them along to someone who can.