Full Technical Description: Wide Throat Type; Malleable Iron Material; Zinc Plated Finish; 3/4 Inch Max. Jaw Capacity; Commercial Application; 5/16 Inch-18 TPI Screw Size; Square Head Screw Type; Yes Supplied With Screw; Approval UL, CUL; Base Size 1-1/2 Inch; Used on Imc/Rigid Conduit Body