Pentax K fit- auto extension tubes set
PS. this will not work with KAF4 lenses with an electronic aperture control as they require SDM contacts. Not that anyone would be mad enough to put this on a 55-300 PLM

PPS. These are hard to find these days. In fact, any PK extension tubes are a rarity.

Regards,
Dan
https://www.flickr.com/photos/honourabletyr/
Yes please. Continue via pm?
pm replied
regards
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
royd63uk
Member
Newport, South Wales,U.k
Excellent condition
£18 inc postage
I think auto in this context means aperture not focus, but stand to be corrected
regards
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery