The Sanitaire 36648A2SV handle socket with spring is an OEM replacement component for 16-inch Sanitaire Tradition series commercial upright vacuums. It fits models SC889D, SC889E, SC889E-1, SC889E-2, SC889E-3, SC889F, and SC899G. The integrated spring maintains the handle's working angle during use. Replace when the handle connection is loose, worn, or the spring no longer holds position.