... ", 4", 4.5", and 6", 8", 10",CASE MATERIAL: Steel case, steel black case, steel chrome plate case Product Explanation:CASE SIZES: 1.5", 2", 2.5", 3 ... 6", 8", 10", CASE MATERIAL: Steel case, steel black case, steel chrome plated case TUBE& SOCKET: Brass, stainless steel, steel with nickel plated, 316 stainless steel,phosphor bronze and so ...