K&F Concept Pentax K Lenses to Fuji X Mount Camera Adapter PK-FX – Camera Commons
Vello Pentax K Lens to Nikon F-Mount Camera Lens Adapter
Fotodiox Mount Adapter for Pentax K Lens to Nikon F-Mount Camera PK-NK-G
FotodioX Pro Lens Mount Adapter for Nikon F Lens to NIKF-PK-PRO
K&F Concept Pentax PK Nikon F adapter - Nikon DSLR Pentax K
Pentax K AF Mount (PKAF) DSLR Lens to Nikon F Mount SLR Camera Body Adapter – Fotodiox, Inc. USA
Rayqual Lens Mount Adapter for PENTAX K Lens to Nikon Z-Mount Camera M – JapanHobbyTool
Amazon.com : Fotasy PK Lens to Nikkor Z Mount Adapter, K Mount to Z Mount Adapter, PK Z Mount, fits Pentax PK Lens, Compatible with Nikon Z Mount Mirrorless Camera Z30 Z50