The surfaces respect the A class rules of modeling for production.Class A surface is any of a set of freeform surfaces of high efficiency and quality. Although, strictly, it is nothing more than saying the surfaces have curvature and tangency alignment – to ideal aesthetical reflection quality, many people interpret class A surfaces to have G2 (or even G3) curvature continuity to one another
WIRE (Autodesk Alias, filesize: 328 KB), OBJ (OBJ, filesize: 467 KB), FBX (Autodesk FBX, filesize: 485 KB), STP (STEP, filesize: 520 KB)