- Features a raised section on the back side of the bung to keep the piece centered when welding.
- Compatible with water, coolant, air, oil, and most fuels.

Raw Aluminum
- Weld-on uncoated 6061 aluminum bung with 37-degree flare.
- Recommended for custom fabrication projects like oil catch cans, swirl pots, reservoirs, fuel cells, steam ports, and oil pans.

Stainless Steel / Mild Steel
- Recommended for custom fabrication projects such as turbo oil return, anti-lag system, coolant lines, oil tanks, gas tanks, and much more.