Okay, I get it now. Thanks for the explanation so I could understand. I have never seen pipe clamps before.
After I yanked the wall furnace down, the black piping to feed the gas to it was left coming through the wall. FINALLY pulled that out and capped it off back in the granddaughters bedroom so that it's fairly non-obnoxious whistle. Anywho, the pipe I pulled out is 1/2" and about 5' long, so I plan to cut it in half and I'll get a couple more 1/2" fixtures for more clamps. You can never have too many clamps. Ask ANY woodworker......they'll tell ya'.