Material:Stainless Steel; Matte Black Finish; Flat Round Ball Privacy Knob 1 Pack per package(for 1 doors) : Privacy door knobs with modern nickel finish for bathroom or bedroom door. Confirm with ANSI Grade 3, Exceeds 200,000 cycles. Steel Adjustable Latch : It has adjustable universal latch - 2-3/8" or 2-3/4", Fits doors 1-1/4 inch to 1-3/4 inch EASY INSTALLATION: Install your door knob in a flash, mounting screws and instruction are included. DIMENSIONS: Adjustable latch with backset is 2-3/8" or 2-3/4"(60mm or 70mm) to fit all standard doors in the thickness of 1-3/8" to 1-3/4" (35mm to 45mm). Matte Black Privacy Door Knobs, Flat Ball Interior Bath/Bed Door Knobs, Keyless Door Handles Locks for Bedroom or Bathroom by Lanwandeng