Speed Booster XL 0.64x Adapter for Nikon F and G Mount Lens to Select Micro Four Thirds-Mount Cameras - Walmart.com
Speedbooster for Canon EF lenses on Nikon Z-Mount
Metabones Nikon G to Micro Four Thirds XL 0.64x Speed Booster for sale online | eBay
Metabones introduces Nikon F Speed Booster for NEX and Micro Four Thirds: Digital Photography Review
Viltrox EF-Z2 Speed Booster Allows Canon EF lenses Used on Nikon Z-mou – Viltrox Store
Amazon.com : Z-Mount Auto-Focus Lens Adapter EF-Z2 Aperture Control 0.71x Speed-Booster Compatible with Canon EF Series Lenses to Nikon Z Mount Camera Z6 / Z7 / Z50 : Electronics
Buy Metabones Leica M Lens to Nikon Z-mount T Adapter - AF Marcotec