Coax clips with the small pin nails attached. Find them in the same aisle as wire nuts & romex staples. If you have a large bundle of wire, you can actually use J hooks, or standoffs like this http://www.garvinindustries.com/Han...nd-Data-Cables/Overhead-Cable-Support-Hangers or http://www.electriciansupplies.com/index.cfm/S/209/CLID/3215/N/9182/Bridle-Rings.htm