... .Core:HRC35, 5.concentricity below 0.03 Ejector sleeve taiwan injection mold part Description in Details of Ejector sleeve1.Ejector sleeve ... .Core:HRC35,5.concentricity below 0.03 Ejector sleeve taiwan injection mold part1.material:JIS SKD61,Hardness -surface:HV900~,Core:HRC35 ... /200/225/250/275/300/350/400 Ejector sleeve taiwan injection mold part