<table border="1" cellspacing="0" cellpadding="8"><tbody><tr><td>Pipe Class</td><td>Not Rated</td><td>Connectivity</td><td>Female</td></tr><tr><td>Surface Treatment</td><td>Polishing</td><td>Technic</td><td>Casting</td></tr><tr><td>shape</td><td>Reducing</td><td>System of Measurement</td><td>inch</td></tr><tr><td>head code</td><td>Hexagon</td><td>Mounting hole diameter</td><td>6.35-108</td></tr><tr><td>Inner diameter</td><td>6.35-108 Inch</td><td>tube thickness</td><td>tube thickness 0.8mm-3mm (mm)</td></tr></tbody></table>