SAFE & SECURE FOR ADDED SECURITYThe Entrance door handle is use for office or front door which both sides are locked and unlocked by outside key or inside turn-buton, one key can open the same lock with same key blank and keyway Adjustable LatchAdjustable Latch with Backset 60mm(2-3/8") or 70mm (2-3/4 '');Fit all doors 35 to 45 mm ( 1-3/8 '' to 1-3/4 '')thick,Notice: The latch plate is square, and can't removable. MATERIALStainless Steel; Color: Satin Nickel;Stainless Steel Plated Lock set with Satin Nickel finish that will not rust, durable for long lasting use.Great Quality and High SecurityConformed with ANSI Grade 3 Exceeds 200,000 cyles and 5 pins brass tumbler cylinder;Solid Column security bolt for anti-sawing protection SIMPLE & EASY INSTALLATIONEasy and simple fitting helping to save you time and gives a safer and more secure installation. No small and fiddly parts, just reliable solid hardware that will pass the test of time.Pack