O-Ring snaps into micro groove to lock the dot in. NO Vibration - POSITIVE SEAL NO AIR LEAKS - NO FUEL LEAKS
This fuel dot is for the BIG GUY. Fuel Dot will work with Nitro fuel line - 1/8" x 1/4", Gas fuel line - 1/8" x 1/4". Includes (1) main dot housing, (1) knurled nut, & (1) Plug.