Material: 304 stainless steel
Size: 3" ID
Thick: 1/2"(12.7mm) approx.
Bolt Circle: 4"
Bolt Sze: 10mm
1/2"(12.7mm) thick to ensure the flange will not flex under weld, stress or bend under normal conditions.
1pcs flange + 1pcs gasket as the picture shown
Professional installation is highly recommended.