piston assembly - it have drawing as well as 3d model you can use for presentation and manufacturing purpose. you can also 3d print of thids model .it have solidworks file, .stp file, .stl file and obj file
SLDPRT (SolidWorks, filesize: 1.07 MB), OBJ (OBJ, filesize: 47 Bytes), STP (STEP, filesize: 89.5 KB), STL (Stereolithography, filesize: 127 KB), IGE (IGES, filesize: 1.57 MB)