MATERIAL: Made of Stainless Steel; Satin Nickel Finish; 5 Pack entry knobs with lock and same keys Round entry knob for use on exterior or interior doors where keyed entry and security is needed Adjustable Backset - 2-3/8 inch or 2-3/4 inch (60mm or 70mm). Fits doors thicknes:1-3/8 inch to 1-3/4 inch (35mm to 45mm) All locks can be opened with 1 key.Solid Column security bolt for anti-sawing protection. Dimensions : Knob Diameter: 2.09"(53mm), Rosette Diameter: 2.56"(65mm). Note : The square plate of the latch is unremovable Conformed with ANSI Grade 3 Security. Metal construction adds strength, security and durability.Easy to install with all accessories included. MATERIAL: Made of Stainless Steel; Satin Nickel Finish; 5 Pack entry knobs with lock and same keys Round entry knob for use on exterior or interior doors where keyed entry and security is needed Adjustable Backset - 2-3/8 inch or 2-3/4 inch (60mm or 70mm). Fits doors thicknes:1-3/8 inch to 1-3/4 inch (35mm to 45mm) All locks can be opened with 1 key.Solid Column security bolt for anti-sawing protection. Dimensions : Knob Diameter: 2.09"(53mm), Rosette Diameter: 2.56"(65mm). Note : The square plate of the latch is unremovable