Same thing that I posted earlier but from Fastenal: https://www.fastenal.com/products/details/11120284 or amazon https://www.amazon.com/100-Type-Snap-Trim-Clips/dp/B0040D2SRG
As for one without on the exterior maybe this? https://www.sdproducts.co.uk/edge-clip-trim-type-1
Some other options : https://www.fastenal.com/products/details/11120253