... stroke,then the plastic can be push out from the mold . Additional information : Our main products include high precision ... Leader pin/Guide pin, Guide bush, Angle pin,Shoulder guide bushing, Sprung Cores ,Air poppet valves . Cooling elements: Spiral plug ... plugs, Jiffy Connectors, Pipe plugs,Heat pipe others : Mold Counterviews,Sprue bushing, Locating ring ect. Our Main Markets: 60% Chinese ...