General description The satin steel door knob set includes one door knob and three keys, designed for both left and right-handed doors. Its durable construction ensures long-lasting performance, while the chrome finish adds an elegant touch to any home or office. Technical specifications Material: Stainless Steel Color: Silver Dimensions (L x W): Approx. 170 x 75mm / 6.7 x 2.95 inches Center Distance: Approx. 60mm (Type A), 70mm (Type B) Suitable Door Thickness: About 35mm-45mm / 1.4-1.77 inches Installation Includes 1 door knob and 3 keys. Usage Ideal for home offices, bedrooms, and interior porch doors. Features a small rotary knob on one side to lock the door and a lock and key mechanism on the other side. Other information Sturdy design prevents breakages common with lower quality mortise door knobs. Provides additional security with the lock and key mechanism.