THIS PART IS MADE COMPLETELY OF 304 STAINLESS STEEL You can put a 1"

pipe line buying at home depot to get the engine gases out of your

garage or any other closed places. 1/4" flange. 1" Male / female NPT

Thread Pipe Fitting Single Male / female Stainless Steel 304 Tig welded.

2 stainless steel screws. 2 SS Lock washer, Exhaust Gasket. Good for:

Mini bikes, go karts, generators... multipurpose. This been tested on

8HP (301cc) OHV Predator, Predator 13 HP (420cc) Engine from harbor

freight. -Works also: GX Hondas 240, 270 & 390, Briggs 1450 305cc,

Lifan LF190F-BQ 15 HP 420cc. Made in U.S.A. ATTENTION, THIS ADAPTER DOES

NOT WORK IN ANY DURAMAX ENGINE, IT DOES NOT MATTER THAT THEY HAVE THE

SAME CC, IT WILL NOT WORK, MOUNTING HOLES ARE WIDER Finding the Correct

Pipe Thread Size National Pipe Threads (NPT) Pipe sizes do refer to

physical dimensions, but the plumbing industry standard for the sizes of

pipe is not always as straight-forward as measuring the pipe. Measuring

the pipe will oftentimes mislead you into choosing the wrong pipe, so

do take care. The "pipe thread size" as shown in column 3 of the table

below is measured and based on the inside of the pipe. But, to actually

determine the size of a pipe, the outside diameter of each pipe or

fitting must be measured and compared to the table for size

identification. For example, a 3/4" NPT pipe thread has an outside

diameter of 1.050 inches. Each thread size has a defined number of

threads per inch (TPI). The 3/4" NPT pipe thread has 14 threads per

inch. Both the TPI (threads per inch) and OD (outside diameter) of the

thread are required for positive identification of thread size because

several sizes have the same TPI.