Our spring loaded hinges are designed for wood or vinyl screen doors and other lightweight doors where automatic closing of a screen door is desired. This kit includes two spring hinges and all screws necessary for mounting. The springs can be used on either left- or right-hand installations. They are surface mounted, and need no more than 2.8mm pilot holes for installation. The closing force of these hinges cannot be adjusted. For hinges with adjustable tension, see our SK920 spring hinge kit.