- Spring-loaded hinges with stopper to lock the hinges in the open position for easy assembly - 270° opening angle - Material : 304 stainless steel, stainless steel spring - Spring torque Opening spring: M(0°): 1.6 Nm M(90°): 1.2 Nm M(180°): 0.84 Nm Closing spring: M(0°): 0.75 Nm M(90°): 1.2 Nm M(180°): 1.65 Nm Info - Spring hinge opens or closes delivered flat