An Easy Fit hinge designed so that it is not necessary to rebate the door or frame to fit it – this Zenith Easy Fit Hinge is quick and simple to install, and used primarily on internal doors. DURAsmooth™ marks the latest generation in door hinge technology, solving the issues of door drop, rusty pins and squeaky hinges by coating the pin with polyamide. The polyamide coating delivers increased durability, door drop reduction and smoother action.