Diamond Crystal Glass Door Knobs with Black Round Rosette, Privacy/Passage/Dummy Door Lock DLC10BK

Features: The door knobs are made from top quality clear glass; the round rosette made from zinc alloy; be strong and durable; Backset: adjustable 60mm (2-3/8") or 70mm (2-3/4") Suit for door thickness: 35 to 45mm (1-3/8" 1-3/4") Included: Spindle, Privacy Pin(only for privacy function door lock), Rosettes, Interior Knobs, Exterior Knob, Hex Key, Latch, the instructions and all the Mounting Hardware Shipped from US, 3-5 days for delivery. Function: *Privacy: with lock function but keyless, you could locked inside using the push button function , but can't open outside as there is no key. Usually for Bedroom/Bathroom door. (could open with coin in emergency) *Passage: No lock, can't be locked, but has the latch, so just turn to open. Usually for Hall or Closet door. *Dummy: Non-functional and inactive, only single knob (no latch).