Here's a set of aperture coupled ETs.
12, 21, 31mm in length for a total of 64mm.
They work exactly as a K or KM lens, not as an A.
i've found that once you take a reading on a macro you can pretty much use that reading until you choose another subject. $42 shipped contUS
these are LN condition and comes with a rear cap.
paypal only These are SOLD
FYI, i'll ship worldwide. some thing like this cost me 6-8usd. overseas would be the actual cost over the contUS price. cost here is $6, cost to your country is $10. your extra cost would be $4 . i'll list the customs declaration as you wish .