The product is made by sand casting with close dimensional tolerances and has a sand blasted superior. Material: aluminum alloy Weight:0.6kg/pcsCan offer three types of molds: die castings, sand castings and permanent mold casting Software for drawing: pro/E, auto CAD, UG, CAD, PDF and solid works 2008 flow analysis Further machining work: turning, cutting, milling, grinding, drilling, reaming ...