[Hayang]

So far I've found the Canare F12. Any others out there that might cost a few pennies less?
I'm trying to fix my ATH M50s and I kind of liked the spring attached to the plug.

 

[jdkJake]

Where do you live? Radio Shack has spring strain relief plugs like the ones you are looking for. Not sure of the price, but, you can check online at their site.

 

[qusp]

the cryoparts carbon fiber barrel mini has nice flexy gold plated spring for strain relief