This a set of door lock, which can be applied to many kinds of interior doors for home security. Made of zinc alloy materials with plating process, these accessories are of strong strength and not easy to corrode. Solid square tongue and quality assurance make it a good item with little noise when closed. Simple handle design provides a comfortable grip. Comes with lock body, lock cylinder, iron sheet, keys, screws, and other accessories, so it is easy to install and very convenient. It can be install in the front or back of the door, and the direction of the handle can be adjusted by yourself easily.   How do you control the quality? We will arrange sample confirmation before production if you need . During the production, we have professional QC staffs control the quality and manufacture in accordance to your confirmed samples. Welcome your visit to factory.