The Wilton Classic series F-clamps are among the first of their kind. With a timeless design this series is an industry favorite. A simple, no-frills construction means it simply gets the job done. Regular duty F-clamps feature a clamping force of 1800 lb. Wilton® F-Clamp, Regular Duty, Series: Classic™, 5-1/2 in Throat Depth, 12 in Clamping Capacity, Hex Head Swivel, 12 in Jaw Opening, 3/4 in Spindle Dia, 1 in W Bar, 15/32 in Bar Thickness, Steel Bar, 1800 lb Clamping Pressure, 1 x 15/32 in Nominal Rail, Sliding Pin/Tommy Bar Handle, Steel Handle, Zinc Plated