Product Name: Latch Lock; material: brass, stainless steel. For exterior doors that require keyed entry and security Equipped with rekey technology; Auto-lock in seconds in just 3 simple steps External key operated latch, internal thumb turn Has adjustable latch:: 60mm - 70mm/2 3/8" - 2 3/4"; fits door thickness: 35-50 mm/1 3/8" - 2"