This 3D model was originally created with Sketchup 6 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Tuning fork guitar... The shape just reminds me of a tuning fork.
STL (Stereolithography, filesize: 1.31 MB), OBJ (OBJ, filesize: 1.06 MB), 3DS (3D Studio, filesize: 963 KB), DAE (Collada, filesize: 1.81 MB), FBX (Autodesk FBX, filesize: 1.5 MB), IGE (IGES, filesize: 277 Bytes), MAX (Autodesk 3ds Max, filesize: 1.58 MB), SKP (Sketchup, filesize: 1.69 MB), OTHER (Other, filesize: 599 KB)