Full Technical Description: I Type; Carbon Steel Material; Hot Dip Galvanized Finish; 2-1/8 Inch Max. Jaw Capacity; Channel Application; ASTM A123 Material Specification; 1000 lb Load Capacity; 1/2 Inch-13 TPI Screw Size; Square Head Screw Type; Yes Supplied With Screw; Overall Dimension 2 Inch L X 1-1/4 Inch W X 2-7/8 Inch H; B435 Model