These Alumina Nozzle Ceramic Cups fit all 9 series air cooled torches and 20 series water cooled torches, including the Lincoln PTA-9 and PTA-20 torches, Miller Diamondback DB9 and DB 20 torches, along with the Weldcraft WP-9 and WP-20 torches. ProductSiteLaunchDate : 2015-07-11T07:00:00.000Z Size : Marks Inch Style : #6 13N10 3/8" Orifice 10pk SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 10