This is a sci fi bomb modeled in Blender 2.82 . The file formats included are .obj, .fbx, .dae and .blend. If you want to use bomb as single object, I have provided a .fbx file named as time bomb as single object. If you want other formats, you can contact me.
BLEND (Blender, filesize: 2.04 MB), OBJ (OBJ, filesize: 1.08 MB), FBX (Autodesk FBX, filesize: 33.3 MB)