Ultraball is created by DIASAI. I just edited a few details to make it comfortable to work in Blender.
STL (Stereolithography, filesize: 86.2 MB), OBJ (OBJ, filesize: 99.9 MB), PNG (PNG, filesize: 71.9 MB), BLEND (Blender, filesize: 95.8 MB), FBX (Autodesk FBX, filesize: 87 MB), OTHER (Other, filesize: 23.9 MB)