Throat size is bored out from a standard #28 nozzle and the throat is re-radiused. Exit Diameter is 1.255".
Liner shoulder length is .410". ;;; All #40 and larger nozzles have a .750" shoulder.
Made from premium grade ISO molded graphite with excellent resistance to thermal shock and erosion.
Please specify nozzle number or throat size (0.458"-.797") in the comments section when ordering.