WarmGlass.com

Hi everyone. I need to find a wholesale distributor of pre-assembled leather necklaces. I'd like a 2mm round (black, brown) with silver clasps that include a 1" or 2" extender chain on the end. I've made a million of these myself in the past, but I'm getting too busy with the glass, and don't have the time to buy and assemble the leathers. I'd rather buy them all set to go, and absorb the cost into the price of my jewelry. I've looked and looked online, and can't find them.
Thanks VERY much for any advice you can give me!
Cheryl