Lanwandeng Matte Black Door Knobs with Lock and Keys, Interior/Exterior Door Knob for Bedroom or Bathroom, Entry Door Lock

• DURABLE: Confirm with ANSI Grade 3, Exceeds 200,000 cycles. Stainless steel knobs with high-grade copper lock and keys, high quality,durable, and matte black finish resist corrosion.
• EASY INSTALLATION: Install your door knob in a flash, SCRATCH RESISTANCE screwdriver, mounting screws and instruction are included. No need for professional door fitters, you can do it yourself!
• KEYED ENTRY FUNCTION: This door knobs includes three BRASS keys, used for exterior door or interior door where security is needed.
• DIMENSIONS: Steel 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). Note: The square plate of the latch is unremovable
• CLASSIC DESIGN: From timeless elegance to striking modernity, our knobs fit and accentuate virtually any decor. Naturally, they’re also designed, crafted and tested to ensure durability.