Compact bench top casting machine use for vacuuming air and gas from flasks. By pulling the air and gas out from the mold, the molten metal flows easily to every opening. Vacuum integrated in machine. Caracteristics: ½HP 3CFM Investment plate size: 11''X11'' Bell Jar: 9" diameter X 8" Height Weight: 50lbs Dimensions: 15"Wx 8"L x 18"