"NATIONAL" SELF CLOSING HEAVY DUTY PVC GATE HINGESTru-CloseSelf Closing Heavy Duty PVC Gate HingesFeature An Internal Spring SystemEnsuring Effective Gate Closure Every TimeInternal Stainless Steel Springs Eliminate The Need For Unsightly & Costly External Closing SpringsUse On Metal Gates Up To 132 LB, 6" H x 4" W With A Point Load Of 700 LBAdjustable Tension, Easy & SafeWill Never Rust Or CorrodeSuper Strong Polymer ConstructionEliminates External SpringsMaintenance Free Self Lubricating, Quick & Easy InstallationLimited Lifetime Warranty