Jergens 27439 L Handle Retractable Locking Plunger, Stainless Steel, 5/8-11 Thread
Made of stainless steel, these spring plungers are great for use in corrosive applications. To retract the nose, just pull the L-handle. Simply lock the nose into the retracted position by pulling the L-handle and rotating it 90°. The plunger nose catches on the notched body and locks into position until you turn back the L-handle.