Fotodiox Pro Lens Mount Adapter - Pentax 6x7 (P67, PK67) Mount SLR Lens to to Pentax 645 (P645) Mount SLR Camera Body Mounts Pentax 6x7 (P67, PK67) Mount SLR Lenses to Pentax 645 (P645) Mount SLR Cameras; infinity focus or beyond allowed Enhanced craftsmanship and high-tolerance construction for demanding professionals Precise fit and solid connection; lens has no play, gap or wiggling when mounted on adapter and no adjustments required Precision all-metal construction for secure and solid fit 24-Month Fotodiox warranty