These are 3D printed cooling shrouds for the AMD Instinct MI25, MI50, and MI60 Accelerator cards. I've only tested these on the Instinct MI25 but it may fit the following models as well-. AMD Radeon Pro V340, V520.
Radeon Instinct MI25, MI50, MI60 Full Shroud Replacement
AMD Radeon Instinct MI25 16GB GPU Accelerator 102D0515200
AMD Radeon Instinct MI25 16GB HBM2 Accelerator Card (2x 8-pin, 300W)
AMD Radeon Instinct MI25 16GB HBM2 PCIE 3.0 GPU Passive Cooling Accelorator Card
1PC AMD Radeon Instinct Mi50 Accelerator 16GB HBM2 Radeon VII DHL OR FEDEX
AMD Radeon Instinct Mi50 Accelerator 16GB HBM2 Machine Learning, HPC, AI, GPU