I have an SMC Pentax-F 1.7x AF Adapter in excellent shape that I just don't use. The photos are of the actual adapter you will receive. This adapter will make any manual focus (K mount, or M42 with proper adapter) lens an auto focus lens. The glass elements inside the adapter move with instructions from your camera's auto focus. All you need to do is get the focus roughly close with your manual focus lens, and the adapter will achieve focus. It is also a very high quality 1.7X tele converter. I have sold all of my MF lenses, and just don't think I'll ever use this again. The glass & mechanics are perfect, and included are the factory front & rear caps. These are getting hard to find and a great thing to have if you own older MF glass. The adapter will be professionally packaged to insure safe delivery to you. Check my feedback on ebay (same username as DPR) to see that I am very trustworthy. It will ship the day after I receive payment. $375.00 includes insured shipping to anywhere in the lower 48 states. Thanks for looking.