Privacy Function/For Bed & Bath,KEYLESSThe privacy knob is ideal for bathrooms, bedrooms, and any room where privacy is needed. Privacy locks can be locked using a push or turn button from inside of a room, and typically feature an emergency release mechanism on the outside. 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 tha