Carbon Steel External Square Head Pipe Plug Zinc Plated Thread Oil Stop Plug
Full Range of Thread Sizes, Widely Used for Oil Tanks, Hydraulic Cylinders and Pipeline Blocking. External Square Head Design, Easy to Tighten and Disassemble with Common Spanner Tools. Two Surface Finishes: Zinc Plating & Black Zinc Plating, Anti-Rust and Anti-Corrosion for Long Service Life.