Hmm before going to his shop I would of assumed so, but now looking at this: 3 SBR16 set+3 ballscrews RM1605+3 BK/BF12 +3 couplering | eBay Im not so sure.

Id suggest either wait for someone who has ordered from chai to post, or email chai direct and explain what you need. Im in this process at the moment and he is nothing but helpful.