HINGE SPRING 4″ X 4″ NATIONAL N184-572 BRASS 2PK.

Closing speed is adjustableTension is adjustableSquare cornersThese hinges will not corrode or rust when exposed to the weatherThere is no need for concern about chipping, scratching or other surface damageAutomatically closes doorsFully adjustable with wrench providedLifespan warranty against defects in material and workmanshipEasy to installUse anti-friction hinges with spring hinges for best spring performance