safety helmet mould1.Material:P20,2738,718,45# 2.Cavity Qty:Single ... Multi 3.Runner:Hot/Cold Runner 4.Mold Base:LKM safety helmet mould 1..Mould steel:45# ,S50C,P20,H13,1.2738 ... ,1.2311 ,718, 718HH2.Plastic Material:PP,ABS,PC,HDPE,PS,NOLYN+GF,TPF,PVC,ect3.Hot Runner ...