Full Technical Description: Pipe/Rigid Conduit to Strut Type; ASTM A1008/A575/A576/A635/A1011 SS Gr 33/A1046/A36/A123/A153 Hot Rolled Pickled and Oiled 12 Gauge Steel Material; Hot Dip Galvanized Finish; 1.9 Inch Outer Diameter; 2-Piece Construction; 800 Pound Load Rating; 1-1/2 Inch Trade Size; Safety Factor 5; Includes Slotted Hex Head Screw and Nut; Approval CSA