Features: Gearbox, Gear case, Gear, Worm, Worm Shaft, Casting, Sand-Casting 1) Ductile iron and gray iron sand ... casting Features:Gearbox, Gear case, Gear, Worm, Worm Shaft, Casting, Sand-Casting1) Ductile iron and gray iron sand casting ... : Pro/E, Auto CAD, Solid Work 2005, CAD / CAM / CAE Aluminum Casting Housings Gearbox