6 Inch Offset for 1 1/2 inch pipe
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Double threaded offset for 1 1/2 inch pipe.
Cable Pass through
Adds 3 Inches of length. For example, if you thread two 4 inch pipes into this, the whole assembly will act like an 11 inch pipe. Another example would be using a 2 inch pipe in one side and a 4 inch pipe in the other, would act like a 9 inch pipe.
Picture is a rendering, actual part is a welded assembly.