This handle lockset features a double cylinder lock that is keyed on both sides and adds security. You can lock the door from the outside and inside with the key. The solid brass made handleset in polished brass finish is wear, spark resistant and resistance to corrosion for long time use. Stylish design of lever lock door handle will enhance the look of your door and your house. Appropriate for the back door, patio door, apartment door, greenhouse door, office door, screen and storm door, etc. The lockset is suitable for large section material door such as stainless steel, wood, iron, etc. This door handle lock set is designed for both right-handed and left-handed doors. According to your way of opening the door, adjust the direction of the handle and latch bolt. For details, please refer to the usage manual. This handle set only fits for 1 in. Or 1.38 in. Thickness door, and requiring 7/8 in. Mortise size on the edge of the door: 3/4-in by 5-3/4-in. Included Components: Door handle set, Installation accessories kit, 2 keys, Product usage manual. Double cylinder lock that is keyed on both sides and adds security.