This specific 3D model, "Gas mask helmet 3d model scifi Low-poly Low-poly 3D model 406", is an asset made available by "Unknown author".
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The license for this digital asset is "Unknown license".
MAX (Autodesk 3ds Max, filesize: 6.28 MB), OBJ (OBJ, filesize: 210 KB), FBX (Autodesk FBX, filesize: 316 KB)