... 5,weight: 1.7kg This is a NIJ III carborundum ceramic plate.Resist: 7.62 x 39mm(AK47), 7.62 x ... 250mm X 25mm, weight 1.5-1.7Kg.NIJ III alumina ceramic plate: size 300mm X 250mm X 18mm, weight 2.4Kg ... 300mm X 250mm X 6mm, weight 3.5Kg.NIJ IV alumina ceramic plate: size 300mm X 250mm X 22mm, weight 3.0Kg ... .NIJ IV carborundum ceramic plate: size 300mm X 250mm X 22mm, weight 2.4Kg ...