*Body:Stainless steel *Ball nose:stainless steel,hardened *High quality,lowest price *Prompt delivery, for we've ready stocks Heavy or Light PressureStainless Steel-Body, Spring and BallCarbon Steel Version Body is 12L14, while Spring and Ball are made of 303 grade SSOne piece body with unique integrated collar.Press Fit Plungers - Heavy PressurePart #End Pressure lbsABCBallDiameter ...