MATERIAL: Made of Stainless Steel; Black Finish; Passage Interior Knobs without Keys. APPLICATION: For use on interior doors no locking functionality, such as hallway or closet doors, and passage doors. HIGH QUALITY: Conformed with ANSI Grade 3 Security. Metal construction adds strength, security and durability; Matte black finish resist corrosion 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-45mm). WARRANTY: If there is any quality or installation issue with our products, please feel free to contact us, we will reply you in 24 hours. MATERIAL: Made of Stainless Steel; Black Finish; Passage Interior Knobs without Keys.