4 inch class 150 304 Stainless Steel threaded cap
4 inch NPT Class 150 304 Stainless Steel threaded cap
4 inch NPT Class 150 304 Stainless Steel threaded cap
4 inch NPT class 150 316 Stainless Steel threaded cap
4 inch NPT class 300 malleable iron NPT threaded cap
4 inch NPT forged carbon steel class 3000 threaded cap
4 inch NPT forged carbon steel class 3000 threaded cap - Made In USA
4 inch NPT class 150 CLASS 150 galvanized malleable iron threaded cap
5 inch NPT class 150 galvanized malleable iron threaded cap
6 inch NPT class 150 NPT class 150 class 150 galvanized malleable iron threaded cap
8 inch NPT malleable iron threaded cap, class 150, MADE IN USA