So, who makes the good ER11 collets? I don’t need many, just a a quarter-inch, I think, and perhaps a 3/32nd. I’d rather not take my chance with whatever the random hobo over on Ebay happened to dig out of the trash can that day, can someone suggest a reputable, reliable source? 
Got mine from Inventables
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Here is the link @DanBrown https://www.inventables.com/technologies/er11-a-collets-nuts-and-wrenches
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I found mine on ebay, Less than $2 with free shipping. The quality seems good, but I have not used them yet.
I should have posted a link… my bad. Thanks for taking up my slack. 
Hey, thanks Zach. I hadn’t really considered Inventables directly!
Hehehe, nope! But that dude over at EBay that decided to make one outa’ the piece 'o rebar he found in the alley… 