Passage Function/For Hallwall & Closet,KEYLESSPassage door locks are used on doors in hallways, closets, and other rooms where a key is not necessary. The passage/hall/closet function is freely operational from both sides of the door at all times. 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: Black;Stainless Steel Plated Lock set with Black 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