TOGU T-09 Heavy Duty Wave Style Lever Lockset and Single Cylinder Deadbolt Combination Set For Home Front Entry Door,Satin Nickel TOGU ANSI/BHMA Grade 3 Certified lockset are used on interior doors where keyed entry and security is needed.Thick brass 6-pin mechanism cylinder with KW1-Keyways ensures that your house is always protected by an anti-theft locked door.Key goes smoothly when lock and unlock the door,guarantee for over 200,000 cycles. All machined from top grade solid die-casting Zinc alloy,anti-rust,durable and strong.Different from the normal stamped material,2mm thicker with the solidity of this material provides a stable structure even to withstand the force of impact,never worry about bent or break during daily using. With Perfect surface treatment,TOGU lockset possesses corrosion resistant,moisture resistant and scratch resistant feature for outside using.Passing 72-hour spray test while the industrial standard is 24-hours,our products offer you a pleasing appearance and a longer life span for 8-10 years in normal conditions. Handles are reversible to fit right or left handed doors,internal labor-saving mechanism design allows the lever works easily when you just push on the lever with your arm when carrying something.Comfortable touching and contemporary style not only offers you enjoyable usage,but also matching your modern decoration. Instructions for installation and screws with mount included,easy to install.Suitable for most existing,standard pre-drilled doors holes,including 2-3/8"-2-3/4" adjustable backset latch to Fit 1-3/8"-1-3/4" doors(For thicker doors please feel free to contact us).