1.No Lock Passage Door Handle: Keyless, it is ideal for doors in hallways, closets, and other rooms where a key is not necessary. The lock is ly operational from both sides of the door at all times. 2.Fully Reversible Design: The reversible design makes our Door Lever Handles very versatile as they can be installed on both left-handed and right-handed doors of all standard sizes(Adjustable Latch fits 60mm or 70mm door( 2 3/8 inch or 2 3/4 inch); Home door lock door thickness 1 3/8'(35mm) to 1 3/4'(44mm)). 3. & Study: Square door lever with heavy duty constructions, made of high quality zinc alloy & stainless steel, Satin Brass finished, modern door lock confirm with ANSI Grade 3 Security, Exceeds 200,000 cycle. Wear-resistant and anti-corrosion, well-engineered and built to last, due to their perfect design and high quality! 4.Installs in Minutes: Simply grab a screwdriver and you can install it in minutes - no professional hand needed! All the necessary screws and diagram template for installation are included.