Southco E6-10-501-20 Series Adjustable Torque Position Control Hinge with Holes, Acetal Copolymer, 2-1/2" Leaf Height, 35.00 in-lbf Symmetric Torque, Black User-adjustable operating effort Corrosion-resistant materials Ability to conceal mounting hardware 3.954 Nm (35.00 in-lbf) forward and reverse symmetric torque Installation: rivet/screw (thru hole)