The Abdi FC-35/120 works well for my purposes. I prefer it to the Nikon ES-2 to scan the full frame with border. It's also a fair amount less expensive than the Negative Supply product, which was a factor in my selection. All the photos with black borders on my Instagram (link below) are with the FC-35/120. I use a D610, Micro-Nikkor 60mm f2.8 D, a DIY copy stand and iPhone 11 (light source). There is a picture of this setup in my highlighted stories on IG.
Full disclosure, there are a few of my pictures on Abdi Camera's IG, but I have no affiliation or investment in the company. I had an issue with the 120 holder and he replaced them free of charge and asked for sample photos. He liked the samples well enough to post them (with my permission).