With its two nozzles, the Blueline pump fills nail spotters, automatic tapers, flat boxes, and Corner Applicators.
Either the filler or the gooseneck adapter is attached to the pump by aligning the slots of the adapter over the studs on the pump housing and tightening the two hex nuts. The gasket should be placed between the pump and the adapter, before tightening nuts, to prevent leakage.tapetechtools.com
Blueline Tools-Parts & Kits 
