Abstract: An adapter for use in manufacturing medical appliances that can be inserted into a luer fitting. The adapter includes two right cylindrical halves that have been longitudinally grooved to engage a tubular delivery appliance, such as a needle. The two adapter halves can be produced with planar surfaces that are grooved after an order has been received, to accommodate a particular delivery appliance outside diameter. Each adapter half is then bonded to another adapter half using an adhesive, gripping the delivery appliance in a fluid-tight fit. Alternatively, the delivery appliance may be frictionally held by the adapter halves. The delivery appliance with the adapter can be easily connected to a luer fitting and such adapted appliances can be produced in small quantities economically.