... 3.reduce friction Increased using life mould parts with high quality core holder 1.core holder material:s45c+brass2.has angle of 0°to20 ... baffles ,Straight plug baffles ,Threadless pressure plugs, Jiffy Connectors, Pipe plugs,Heat pipe others : Mold Counterviews,Sprue bushing, Locating ring ect. Our ...