ITEM NAME:Thumb Turn Cylinders Door Lock Barrel Door Description: Made of aluminum material which is rust-proof. Adopts multi-way lock principle, using a variety of institution of mechanical abnormity, prevent lock from drilling and master key opening. Anti-theft function effectively improve the reliability and safety of the lock. Designed with thumb turn. Suitable for indoor room door. Specification: Size: (LxWxH) Approx. 7x2.9x1cm/2.76x1.14x0.39inch Mount Hole Diameter: 0.4cm Package Includes: 1 Piece Door Lock Core 3 Pieces Keys 1 Piece Screw Note: As different computers display colors differently, the color of the actual item may vary slightly from the above images. There is 2-3% difference according to manual measurement. Please check the measurement chart carefully before you buy the item. SKU: DMO0022676370015965.Designed with thumb turn. Anti-theft function effectively improve the reliability and safety of the lock. 1 Piece Door Lock Core. 1 Piece Screw. Suitable for indoor room door. As different computers display colors differently, the color of the actual item may vary slightly from the above images.