National Hardware N165-498 V850 Door and Gate Spring in Black Designed to close doors and gates automatically Spring is self closing with adjustable tension Mounting screws included Offered in either 12 or 14 inch sizes- use 14 inch size for heavier applications Triple protected finish for extra corrosion protection Designed to close doors and gates automatically Spring is self closing Closing tension is adjustable Triple protected finish for extra corrosion protection Mounting screws included Manufactured from hot-rolled steel