Wheels on my gobos?

Quick question: Just built some new gobos. Where can I find a bracket/caster part to put under them -so I can wheel them around the tracking area? I'm specifically talking about the U-shaped metal bracket / caster thingee shown in this thread. It actually would be helpful even to know what this sort of bracket is called, or what sort of trade traditionally uses them. All the hardware stores and lumber centers (good, local places) are scratching their heads. Adam

Sory to disappoint you. They are called bent metal. They are custom made. :) Andre

Hi Adam, These are just painted wood and work fine. Not as elegant but very simple. Andrew

Well... if they're custom made, I've got a bunch of metal fabricators near by (this is SE Michigan; the home of custom parts). Might even be affordable, in bulk (I need about 20 made - for 10 gobos). But I could've sworn this was an off the shelf item - for some application (not gobos!) anyway. Any other ideas? Adam

Update: Ethan Winer tells me these things are available at Home Depot. Closest Home Depot is 35 minutes away, so it'll be a little while before I confirm locally. Anyone else find these things there? I'll try to update the thread when I find out more. Adam