A tubular reducer fitting for transitioning from an existing ENT socket of one size to an ENT socket of a smaller size. The male end portion has a cylindrical outer surface with a pair of axially-spaced projections extending outwardly therefrom and is receivable in an existing ENT socket. The female end portion has an ENT socket therein. The male end portion is configured for locking reception in a first trade size ENT socket and the opposite female connector end portion has a smaller trade size ENT socket therein.