This is standard M12x30 size Bolt designed and rendered in solidworks
can be 3d printed upside downresolution 0.1infill 30%shells 2
Printer: MakerBot rep+raft -onsupport -offFormats: IGES, STEP, STL, solidworks,
STL (Stereolithography, filesize: 1.85 MB), IGE (IGES, filesize: 1.85 MB), SLDPRT (SolidWorks, filesize: 1.85 MB)